Here are 45 multiple-choice questions (MCQs) based on the data you provided. The questions are categorized into easy, moderate, and difficult levels, with the correct answers listed at the end.
Easy MCQs
1. What is the effect of force on the motion of an object?
A) It causes acceleration
B) It has no effect
C) It stops the object
D) It makes the object heavier
2. How is inertia defined in Newton’s First Law of Motion?
A) The resistance to acceleration
B) The force required to move an object
C) The momentum of an object
D) The weight of an object
3. What is the formula to calculate weight?
A) W = ma
B) W = mg
C) W = mv
D) W = F/m
4. What type of force is friction?
A) A pulling force
B) A resisting force
C) A pushing force
D) A gravitational force
5. Which force is responsible for keeping a car on a curved road?
A) Centrifugal force
B) Frictional force
C) Gravitational force
D) Tension
6. What happens to an object when no net force acts on it?
A) It accelerates
B) It maintains its state of motion
C) It stops moving
D) It changes direction
7. What effect does mass have on weight?
A) Greater mass equals greater weight
B) Mass has no effect on weight
C) Lesser mass equals greater weight
D) Mass is equal to weight
8. How can friction be reduced?
A) By making surfaces rougher
B) By using lubricants
C) By increasing weight
D) By increasing speed
9. What does Newton’s Third Law of Motion state?
A) For every action, there is an equal and opposite reaction
B) An object in motion stays in motion
C) Force equals mass times acceleration
D) Gravity acts downward
10. What is the role of tension in a string?
A) It opposes gravity
B) It supports the weight
C) It causes acceleration
D) It is irrelevant
11. Which type of friction occurs when an object rolls over a surface?
A) Sliding friction
B) Static friction
C) Rolling friction
D) Kinetic friction
12. What is an example of uniform circular motion?
A) A car speeding down a straight road
B) A satellite orbiting Earth
C) A ball rolling on the ground
D) A person walking
13. What does the Law of Conservation of Momentum state?
A) Momentum is always gained
B) Momentum is conserved in isolated systems
C) Momentum can be created
D) Momentum is lost during collisions
14. How does rolling friction compare to sliding friction?
A) Rolling friction is greater
B) Sliding friction is less
C) Rolling friction is less
D) They are the same
15. What is the effect of friction on the efficiency of machines?
A) It increases efficiency
B) It has no effect
C) It decreases efficiency
D) It is always negligible
Moderate MCQs
16. What is the relationship between force and acceleration according to Newton's Second Law?
A) They are inversely proportional
B) They are directly proportional
C) They are unrelated
D) One causes the other
17. How can a washing machine dryer use centrifugal force?
A) To spin clothes
B) To heat water
C) To wash clothes
D) To soften fabric
18. In which type of motion is the direction of velocity constantly changing?
A) Linear motion
B) Uniform motion
C) Circular motion
D) Rest
19. What happens to the acceleration of a body if its mass is doubled while force remains constant?
A) It doubles
B) It halves
C) It remains the same
D) It quadruples
20. What is the significance of Newton's Second Law in practical terms?
A) It explains gravity
B) It defines friction
C) It helps calculate acceleration
D) It describes circular motion
21. How does friction assist in starting the motion of a vehicle?
A) It prevents slipping
B) It increases speed
C) It acts as a brake
D) It reduces power
22. What is the effect of tension on a body in vertical motion over a pulley?
A) It has no effect
B) It changes the weight
C) It creates acceleration
D) It opposes motion
23. How is centripetal force calculated for an object in circular motion?
A) F = mv^2/r
B) F = mg
C) F = ma
D) F = mgh
24. How does the weight of an object change when moved to a different planet?
A) It increases
B) It decreases
C) It remains the same
D) It depends on mass
25. What is the role of friction in braking a vehicle?
A) It slows down the vehicle
B) It increases speed
C) It has no effect
D) It stops the engine
26. How does rolling friction differ from sliding friction?
A) Rolling friction is greater
B) Sliding friction is less
C) Rolling friction is less
D) They are identical
27. How can you demonstrate Newton’s First Law of Motion?
A) By showing inertia
B) By calculating mass
C) By measuring speed
D) By using friction
28. What is uniform circular motion?
A) Constant speed in a straight line
B) Constant speed in a circular path
C) Accelerating in a circle
D) Moving at different speeds
29. What causes a vehicle to skid?
A) Excessive acceleration
B) Too much friction
C) Lack of braking force
D) Too little weight
30. How does friction affect the efficiency of machines?
A) It makes them faster
B) It reduces energy loss
C) It decreases efficiency
D) It is beneficial
Difficult MCQs
31. How is the centripetal force derived for a body in circular motion?
A) From gravitational force
B) Using mass and acceleration
C) Using friction
D) From tension in a string
32. What is the mathematical relationship for momentum?
A) p = mv
B) p = ma
C) p = mg
D) p = F/m
33. How does the weight of a body affect its motion on an inclined plane?
A) It increases speed
B) It decreases speed
C) It has no effect
D) It changes direction
34. What happens during an inelastic collision according to the Law of Conservation of Momentum?
A) Momentum is lost
B) Momentum is conserved
C) Momentum doubles
D) Momentum decreases
35. What is the effect of force on the acceleration of a body?
A) Directly proportional
B) Inversely proportional
C) Unrelated
D) Exponentially related
36. How can we derive the tension in a string when two bodies move vertically?
A) Using mass and gravity
B) By calculating force
C) By measuring distance
D) By observing speed
37. What is the role of tension in vertical motion?
A) It opposes gravity
B) It accelerates the object
C) It reduces weight
D) It has no impact
38. How can friction be beneficial in everyday applications?
A) It causes wear and tear
B) It helps in grip and traction
C) It increases energy loss
D) It has no benefits
39. What does the relationship between force and momentum indicate?
A) Force is equal to momentum
B) Force equals the rate of change of momentum
C) Momentum does not involve force
D) They are unrelated
40. How does the Law of Conservation of Momentum explain rocket propulsion?
A) By increasing mass
B) By expelling gas
C) By reducing speed
D) By changing direction
41. How is the motion of a body affected on a frictionless surface?
A) It accelerates rapidly
B) It stops immediately
C) It moves freely
D) It cannot move
42. What is the mathematical expression for calculating acceleration under gravity?
A) a = F/m
B) a = mg
C) a = v/t
D) a = F/mg
43. How can we describe the relationship between centripetal force, mass, and velocity?
A) F = mv^2/r
B) F = mg
C) F = ma
D) F = mv
44. How does a change in mass affect tension in a string?
A) Tension remains constant
B) Greater mass increases tension
C) Lesser
Here are 45 multiple-choice questions (MCQs) based on the data you provided, divided into easy, moderate, and difficult categories. Each category has 15 questions, and the answers are listed at the end in a three-column format.
Easy MCQs
1. What is the effect of force on the motion of an object?
- A) It always increases speed.
- B) It can change the direction of motion.
- C) It has no effect.
- D) It only stops the motion.
2. What is inertia?
- A) The tendency of an object to remain at rest or in uniform motion.
- B) The force applied to an object.
- C) The mass of an object.
- D) The weight of an object.
3. According to Newton’s First Law of Motion, an object at rest...
- A) Will remain at rest unless acted upon by a force.
- B) Will always move.
- C) Will eventually stop.
- D) Will accelerate.
4. What does Newton’s Second Law of Motion state?
- A) For every action, there is an equal and opposite reaction.
- B) The acceleration of an object is directly proportional to the force acting on it.
- C) Objects in motion tend to stay in motion.
- D) Weight is mass multiplied by gravity.
5. How is weight calculated?
- A) W = m × a
- B) W = m × g
- C) W = a × g
- D) W = F × m
6. What does friction do?
- A) Increases speed.
- B) Opposes motion.
- C) Has no effect on motion.
- D) Changes direction only.
7. What is the role of friction in rolling motion?
- A) It helps the object to roll.
- B) It stops the object from rolling.
- C) It increases speed.
- D) It has no role.
8. How can friction be reduced?
- A) By increasing roughness.
- B) By using lubrication.
- C) By increasing pressure.
- D) By increasing weight.
9. What is centripetal force?
- A) The force that pulls objects away from the center.
- B) The force that keeps an object moving in a circular path.
- C) The force of gravity.
- D) The force of friction.
10. What happens when a vehicle skids?
- A) It accelerates.
- B) It stops.
- C) It loses traction.
- D) It moves smoothly.
11. Which of the following describes uniform circular motion?
- A) The object moves in a straight line.
- B) The object moves with constant speed in a circular path.
- C) The object speeds up and slows down.
- D) The object moves in a zigzag pattern.
12. How does mass influence the weight of a body?
- A) Weight is independent of mass.
- B) Weight increases with mass.
- C) Weight decreases with mass.
- D) Weight only depends on gravity.
13. In a frictionless environment, an object in motion...
- A) Will eventually stop.
- B) Will continue to move at a constant velocity.
- C) Will accelerate.
- D) Will reverse direction.
14. What is the difference between sliding friction and rolling friction?
- A) Sliding friction is greater than rolling friction.
- B) Rolling friction is greater than sliding friction.
- C) They are the same.
- D) Sliding friction occurs in water.
15. What is the significance of Newton’s Third Law of Motion?
- A) Objects at rest stay at rest.
- B) Action and reaction forces are equal and opposite.
- C) Acceleration depends on mass.
- D) Weight is mass times gravity.
Moderate MCQs
16. What does the Law of Conservation of Momentum state?
- A) Momentum is always lost in collisions.
- B) Total momentum before a collision equals total momentum after.
- C) Momentum can be created.
- D) Momentum is independent of mass.
17. How does tension in a string affect acceleration?
- A) It has no effect.
- B) It always increases acceleration.
- C) It can either increase or decrease acceleration depending on the forces involved.
- D) It only decreases acceleration.
18. What role does friction play in braking a vehicle?
- A) It slows down the vehicle.
- B) It has no effect.
- C) It speeds up the vehicle.
- D) It makes the vehicle unstable.
19. What is the formula for calculating momentum?
- A) p = mv
- B) p = ma
- C) p = Fm
- D) p = mg
20. How is weight affected by gravity?
- A) Weight decreases with altitude.
- B) Weight increases with altitude.
- C) Weight is constant regardless of gravity.
- D) Weight changes based on the mass only.
21. How does the motion of a body change under constant force?
- A) It remains at rest.
- B) It accelerates.
- C) It decelerates.
- D) It moves in a circle.
22. What is rolling friction?
- A) The resistance encountered when an object rolls over a surface.
- B) The resistance encountered when an object slides over a surface.
- C) The force that opposes motion.
- D) The friction between two stationary objects.
23. How does a washing machine dryer use centrifugal force?
- A) To wash clothes.
- B) To dry clothes by forcing water out.
- C) To keep clothes in place.
- D) To clean the drum.
24. What happens to the motion of a body on a frictionless surface?
- A) It speeds up indefinitely.
- B) It stops immediately.
- C) It moves in a circular path.
- D) It experiences friction.
25. What is meant by the horizontal motion of a body attached to a string?
- A) The motion occurs only vertically.
- B) The motion occurs along the horizontal plane.
- C) There is no motion involved.
- D) The string is stretched horizontally.
26. How does friction affect the motion of a rolling ball?
- A) It increases speed.
- B) It has no effect.
- C) It slows down the ball.
- D) It stops the ball immediately.
27. What is the formula for calculating the acceleration of a body?
- A) a = F/m
- B) a = mg
- C) a = p/v
- D) a = Fp
28. Describe the relationship between force and acceleration.
- A) Force is independent of acceleration.
- B) Acceleration is always constant regardless of force.
- C) Force is directly proportional to acceleration.
- D) Acceleration decreases with increased force.
29. What is the effect of tension on the motion of two bodies connected by a string?
- A) It has no effect.
- B) It changes the direction of motion.
- C) It causes one body to move faster.
- D) It equalizes the motion of both bodies.
30. What does the concept of vertical motion entail?
- A) Motion occurs only along the x-axis.
- B) Motion occurs only due to gravity.
- C) Motion can be horizontal or vertical.
- D) Motion is circular.
31. How does a cream separator utilize centrifugal force?
- A) To keep cream at the bottom.
- B) To separate cream from milk using rapid rotation.
- C) To mix cream and milk together.
- D) To slow down the milk flow.
32. How does the motion of a body change when a variable force is applied?
- A) It always speeds up.
- B) It changes direction only.
- C) It may accelerate or decelerate based on the force applied.
- D) It remains constant.
33. What is the impact of varying mass on the tension in a string?
- A) It has no impact.
- B) Greater mass increases tension.
- C) Greater mass decreases tension.
- D) Tension is constant regardless of mass.
34. Explain how momentum is conserved in an isolated system.
- A) Momentum can be created.
- B) Total momentum before equals total momentum after any interaction.
- C) Momentum is lost in isolated systems.
- D) Momentum depends on external forces.
35. Describe the effect of friction in the motion of objects on different surfaces.
- A) Friction is the same on all surfaces.
- B) Friction varies based on surface texture.
- C) Friction increases on smoother surfaces.
- D) Friction only exists in water.
36. What is the formula for calculating centripetal force?
- A) F = mv^2/r
- B) F = ma
- C) F = mg
- D) F = p/v
Difficult MCQs
37. What is the mathematical form of Newton’s Second Law of Motion?
- A) F = ma
- B) F = m/v
- C) F = mv
- D) F = mg
38. Explain how the Law of Conservation of
Here are the 45 multiple-choice questions (MCQs) organized into easy, moderate, and difficult categories, complete with answer keys:
Easy MCQs
1. What is the effect of force on the motion of an object?
- A) It always increases speed.
- B) It can change the direction of motion. (Correct Answer)
- C) It has no effect.
- D) It only stops the motion.
2. What is inertia?
- A) The tendency of an object to remain at rest or in uniform motion. (Correct Answer)
- B) The force applied to an object.
- C) The mass of an object.
- D) The weight of an object.
3. According to Newton’s First Law of Motion, an object at rest...
- A) Will remain at rest unless acted upon by a force. (Correct Answer)
- B) Will always move.
- C) Will eventually stop.
- D) Will accelerate.
4. What does Newton’s Second Law of Motion state?
- A) For every action, there is an equal and opposite reaction.
- B) The acceleration of an object is directly proportional to the force acting on it. *(Correct Answer)*
- C) Objects in motion tend to stay in motion.
- D) Weight is mass multiplied by gravity.
5. How is weight calculated?
- A) W = m × a
- B) W = m × g (Correct Answer)
- C) W = a × g
- D) W = F × m
6. What does friction do?
- A) Increases speed.
- B) Opposes motion. (Correct Answer)
- C) Has no effect on motion.
- D) Changes direction only.
7. What is the role of friction in rolling motion?
- A) It helps the object to roll.
- B) It stops the object from rolling.
- C) It increases speed.
- D) It has no role. (Correct Answer)
8. How can friction be reduced?
- A) By increasing roughness.
- B) By using lubrication. (Correct Answer)
- C) By increasing pressure.
- D) By increasing weight.
9. What is centripetal force?
- A) The force that pulls objects away from the center.
- B) The force that keeps an object moving in a circular path. (Correct Answer)
- C) The force of gravity.
- D) The force of friction.
10. What happens when a vehicle skids?
- A) It accelerates.
- B) It stops.
- C) It loses traction. (Correct Answer)
- D) It moves smoothly.
11. Which of the following describes uniform circular motion?
- A) The object moves in a straight line.
- B) The object moves with constant speed in a circular path. (Correct Answer)
- C) The object speeds up and slows down.
- D) The object moves in a zigzag pattern.
12. How does mass influence the weight of a body?
- A) Weight is independent of mass.
- B) Weight increases with mass. (Correct Answer)
- C) Weight decreases with mass.
- D) Weight only depends on gravity.
13. In a frictionless environment, an object in motion...
- A) Will eventually stop.
- B) Will continue to move at a constant velocity. (Correct Answer)
- C) Will accelerate.
- D) Will reverse direction.
14. What is the difference between sliding friction and rolling friction?
- A) Sliding friction is greater than rolling friction. (Correct Answer)
- B) Rolling friction is greater than sliding friction.
- C) They are the same.
- D) Sliding friction occurs in water.
15. What is the significance of Newton’s Third Law of Motion?
- A) Objects at rest stay at rest.
- B) Action and reaction forces are equal and opposite. (Correct Answer)
- C) Acceleration depends on mass.
- D) Weight is mass times gravity.
Moderate MCQs
16. What does the Law of Conservation of Momentum state?
- A) Momentum is always lost in collisions.
- B) Total momentum before a collision equals total momentum after. (Correct Answer)
- C) Momentum can be created.
- D) Momentum is independent of mass.
17. How does tension in a string affect acceleration?
- A) It has no effect.
- B) It always increases acceleration.
- C) It can either increase or decrease acceleration depending on the forces involved. (Correct Answer)
- D) It only decreases acceleration.
18. What role does friction play in braking a vehicle?
- A) It slows down the vehicle. (Correct Answer)
- B) It has no effect.
- C) It speeds up the vehicle.
- D) It makes the vehicle unstable.
19. What is the formula for calculating momentum?
- A) p = mv (Correct Answer)
- B) p = ma
- C) p = Fm
- D) p = mg
20. How is weight affected by gravity?
- A) Weight decreases with altitude. (Correct Answer)
- B) Weight increases with altitude.
- C) Weight is constant regardless of gravity.
- D) Weight changes based on the mass only.
21. How does the motion of a body change under constant force?
- A) It remains at rest.
- B) It accelerates. (Correct Answer)
- C) It decelerates.
- D) It moves in a circle.
22. What is rolling friction?
- A) The resistance encountered when an object rolls over a surface. (Correct Answer)
- B) The resistance encountered when an object slides over a surface.
- C) The force that opposes motion.
- D) The friction between two stationary objects.
23. How does a washing machine dryer use centrifugal force?
- A) To wash clothes.
- B) To dry clothes by forcing water out. (Correct Answer)
- C) To keep clothes in place.
- D) To clean the drum.
24. What happens to the motion of a body on a frictionless surface?
- A) It speeds up indefinitely. (Correct Answer)
- B) It stops immediately.
- C) It moves in a circular path.
- D) It experiences friction.
25. What is meant by the horizontal motion of a body attached to a string?
- A) The motion occurs only vertically.
- B) The motion occurs along the horizontal plane. (Correct Answer)
- C) There is no motion involved.
- D) The string is stretched horizontally.
26. How does friction affect the motion of a rolling ball?
- A) It increases speed.
- B) It has no effect.
- C) It slows down the ball. (Correct Answer)
- D) It stops the ball immediately.
27. What is the formula for calculating the acceleration of a body?
- A) a = F/m (Correct Answer)
- B) a = mg
- C) a = p/v
- D) a = Fp
28. Describe the relationship between force and acceleration.
- A) Force is independent of acceleration.
- B) Acceleration is always constant regardless of force.
- C) Force is directly proportional to acceleration. (Correct Answer)
- D) Acceleration decreases with increased force.
29. What is the effect of tension on the motion of two bodies connected by a string?
- A) It has no effect.
- B) It changes the direction of motion.
- C) It causes one body to move faster.
- D) It equalizes the motion of both bodies. (Correct Answer)
30. What does the concept of vertical motion entail?
- A) Motion occurs only along the x-axis.
- B) Motion occurs only due to gravity. (Correct Answer)
- C) Motion can be horizontal or vertical.
- D) Motion is circular.
31. How does a cream separator utilize centrifugal force?
- A) To keep cream at the bottom.
- B) To separate cream from milk using rapid rotation. (Correct Answer)
- C) To mix cream and milk together.
- D) To slow down the milk flow.
32. How does the motion of a body change when a variable force is applied?
- A) It always speeds up.
- B) It changes direction only.
- C) It may accelerate or decelerate based on the force applied. (Correct Answer)
- D) It remains constant.
33. What is the impact of varying mass on the tension in a string?
- A) It has no impact.
- B) Greater mass increases tension. (Correct Answer)
- C) Greater mass decreases tension.
- D) Tension is constant regardless of mass.
34. Explain how momentum is conserved in an isolated system.
- A) Momentum can be created.
- B) Total momentum before equals total momentum after any interaction. (Correct Answer)
- C) Momentum is lost in isolated systems.
- D) Momentum depends on external forces.
35. Describe the effect of friction in the motion of objects on different surfaces.
- A) Friction is the same on all surfaces.
Here are the remaining MCQs organized into the moderate and difficult categories, along with their correct answers:
Moderate MCQs (continued)
36. How do you calculate the force exerted by an object?
- A) F = m × a (Correct Answer)
- B) F = p/v
- C) F = m/g
- D) F = a/v
37. What type of energy is associated with motion?
- A) Potential energy
- B) Kinetic energy (Correct Answer)
- C) Thermal energy
- D) Mechanical energy
38. What is the effect of increasing the mass of a moving object on its momentum?
- A) Momentum decreases.
- B) Momentum stays the same.
- C) Momentum increases. (Correct Answer)
- D) Momentum becomes zero.
39. Which factor does not affect the gravitational force between two objects?
- A) Mass of the objects
- B) Distance between the objects
- C) Shape of the objects (Correct Answer)
- D) Gravitational constant
40. What is the principle behind a lever?
- A) It reduces the amount of force needed. (Correct Answer)
- B) It increases weight.
- C) It converts energy.
- D) It changes direction only.
41. How does a pulley make work easier?
- A) It increases the distance.
- B) It changes the direction of the force applied. (Correct Answer)
- C) It increases the weight.
- D) It decreases the mass.
42. What is the effect of air resistance on falling objects?
- A) It increases speed.
- B) It decreases speed. (Correct Answer)
- C) It has no effect.
- D) It makes objects bounce.
43. What happens to a projectile at its highest point?
- A) It has maximum speed.
- B) It has zero vertical velocity. (Correct Answer)
- C) It starts to fall.
- D) It gains height.
44. What is the effect of increasing the radius of a circular path on centripetal force?
- A) Centripetal force decreases. (Correct Answer)
- B) Centripetal force stays the same.
- C) Centripetal force increases.
- D) Centripetal force becomes zero.
45. How does the angle of an inclined plane affect the force required to move an object?
- A) A steeper angle requires more force. (Correct Answer)
- B) A steeper angle requires less force.
- C) The angle has no effect.
- D) A horizontal plane requires more force.
Difficult MCQs
46. What is the relationship between force, mass, and acceleration known as?
- A) Newton's First Law
- B) Newton's Second Law (Correct Answer)
- C) Newton's Third Law
- D) Law of Conservation of Energy
47. What happens to the momentum of a system when two objects collide and stick together?
- A) Momentum is lost.
- B) Momentum is conserved. (Correct Answer)
- C) Momentum is doubled.
- D) Momentum becomes zero.
48. In a perfectly elastic collision, what happens to kinetic energy?
- A) It is lost.
- B) It is conserved. (Correct Answer)
- C) It doubles.
- D) It becomes potential energy.
49. How is angular momentum calculated for a rotating body?
- A) L = I × Ï‰ (Correct Answer)
- B) L = m × v
- C) L = F × r
- D) L = p/v
50. In terms of work-energy principle, what happens when work is done on an object?
- A) Its mass decreases.
- B) Its energy increases. (Correct Answer)
- C) Its speed becomes constant.
- D) Its acceleration decreases.
51. What is the coefficient of friction?
- A) The ratio of frictional force to normal force. (Correct Answer)
- B) The ratio of mass to acceleration.
- C) The force required to move an object.
- D) The ratio of speed to distance.
52. How does the conservation of energy principle apply to a pendulum?
- A) Energy is lost as heat.
- B) Total mechanical energy remains constant. (Correct Answer)
- C) Energy converts to mass.
- D) Energy is always increased.
53. What defines an object in rotational equilibrium?
- A) It is at rest.
- B) The net torque acting on it is zero. (Correct Answer)
- C) The net force is zero.
- D) It has constant velocity.
54. What is the work done when a force is applied at an angle to the direction of motion?
- A) Work = F × d
- B) Work = F × d × cos(θ) (Correct Answer)
- C) Work = F × d × sin(θ)
- D) Work = F × d × tan(θ)
55. How does temperature affect the kinetic energy of particles in a substance?
- A) Higher temperature increases kinetic energy. (Correct Answer)
- B) Lower temperature decreases kinetic energy.
- C) Temperature has no effect.
- D) Kinetic energy is constant regardless of temperature.
56. What is the term for energy stored due to an object's position?
- A) Kinetic energy
- B) Potential energy (Correct Answer)
- C) Thermal energy
- D) Chemical energy
57. In a vacuum, all objects fall at the same rate regardless of mass due to:
- A) Air resistance
- B) Gravitational acceleration being constant. (Correct Answer)
- C) The shape of the object.
- D) Their initial velocity.
58. How does an increase in the angle of a ramp affect the force required to push an object up the ramp?
- A) It decreases the force required.
- B) It increases the force required. (Correct Answer)
- C) The force remains constant.
- D) The ramp becomes vertical.
59. What is the function of a brake in a car?
- A) To increase speed.
- B) To convert kinetic energy into heat through friction. (Correct Answer)
- C) To maintain momentum.
- D) To change direction.
60. What does the area under a force vs. time graph represent?
- A) Work done
- B) Momentum change (Correct Answer)
- C) Energy stored
- D) Distance traveled
Feel free to ask if you need any adjustments or additional questions!