Free Force and Motion MCQs with Answers
1,416 Force and Motion MCQs from Physics, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Displacement, velocity and acceleration describe motion, including the horizontal and vertical components of projectile motion. The chapter connects these quantities with Newton's laws, momentum and impulse, then applies conservation of momentum to collisions, distinguishing elastic collisions from inelastic ones.
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1,416 questions · page 32 of 71
- A. 0 m/s2
- B. 2 m/s2
- C. 4 m/s2
- D. 6 m/s2
Explanation: Solution: a = Δv / Δt.Determine the change in velocity (Δv) by subtracting the initial velocity (vi) from the final velocity (vf).
Correct answer: 2 m/s2622. In the given diagram, which force does the maximum work as the block moves up on the inclined plane?
- A. A
- B. B
- C. C
- D. D
Explanation: For the box to move up the box, force B must do the maximum work as the direction of force B is towards the top of the hill.
Correct answer: B- A. Q only
- B. O only
- C. P only
- D. both P & Q
Explanation: Instantaneous velocity: Instantaneous velocity definition is given as "The velocity of an object under motion at a specific point of…
Correct answer: O only- A. 32 N
- B. 7 N
- C. √61 N
- D. √11 N
Explanation: To find the resultant force, we need to add the forces vectorially. The 5 N force acting towards the East and the 6 N force acting towards…
Correct answer: √61 N- A. a
- B. b
- C. c
- D. d
Explanation: At max displacement velocity will be 0. Then till middle their will be acceleration to give max velocity then min displacement and then 0…
Correct answer: b- A. 0°
- B. 30°
- C. 45°
- D. 60°
Explanation: When two equal forces are applied perpendicularly to each other, they create a right angle.
Correct answer: 45°- A. IV only
- B. I, II, and III only
- C. III only
- D. I only
Explanation: Speed = slope of distance-time graph The slope of graph (I) is constant. So, speed is constant.
Correct answer: I only- A. Only momentum remains conserved
- B. Only kinetic energy remains conserved
- C. Both momentum and K.E are conserved
- D. Neither K.E nor momentum is conserved
Explanation: Neither kinetic energy nor momentum is conserved. Law conservation of momentum states that the momentum of a system is constant if no…
Correct answer: Neither K.E nor momentum is conserved- A. 100m
- B. 100√2 m
- C. 100/√2 m
- D. None
Explanation: Assuming O is the center of a circle and AB is along the circumference of a circle of radius R (R = 100 meters), any point on that…
Correct answer: 100m- A. A
- B. B
- C. C
- D. D
Explanation: In the case, initial velocity will be maximum, velocity will be zero at highest position, then velocity will increase when body comes back.
Correct answer: C- A. Particle going in a circle
- B. The momentum of the particle constant
- C. Particle going along a straight-line
- D. Accceleration of the particle constant
Explanation: To conserve law of conservation of momentum, external force should be zero.
Correct answer: The momentum of the particle constant- A. 2.16m/sec2
- B. -2.16m/sec2
- C. 4.16m/sec2
- D. -4.16m/sec2
Explanation: Option D is correct.Given data:final velocity= 0 m/s , Initial velocity= 5 m/s , Displacement =3 mFind out=uniform decceleration…
Correct answer: -4.16m/sec2- A. bus will come to rest in a shorter distance
- B. car will come to rest in a shorter distance
- C. both will come to rest in the same distance
- D. none of the above
Explanation: The distance they move will depend on their deceleration, which in turn would depend on the frictional force exerted by their respective…
Correct answer: car will come to rest in a shorter distance- A. Newton's 1st law
- B. Newton's 2nd law
- C. Newton's 3rd law
- D. Newton's gravitational law
Explanation: The following is the solution: A rocket works on Newton's third law. Newton's third law states that for every action, there is an equal…
Correct answer: Newton's 3rd law- A. 9.8 m/s2
- B. Less than 9.8 m/s2
- C. More than 9.8 m/s2
- D. Speed of throw is required for answer
Explanation: The following is the solution: Option A is correct because if the ball's initial velocity is downward, the acceleration immediately after…
Correct answer: 9.8 m/s2- A. Velocity
- B. Displacement
- C. Acceleration
- D. Time
Explanation: The following is the solution: Option B is correct because the area between the velocity-time graph and the time-axis is numerically equal…
Correct answer: Displacement- A. +4Ns
- B. -4Ns
- C. +8Ns
- D. -8Ns
Explanation: The following is the solution: When a ball bounces off a wall and changes direction without losing any kinetic energy, it experiences a…
Correct answer: -8Ns- A. S1 = S2
- B. S1 = 3S2
- C. S2 = 4S1
- D. 2S2 = 3S1
Explanation: The following is the solution: In the 1st second, the body starts from rest (initial velocity, u = 0 m/s) and experiences a constant…
Correct answer: S2 = 4S1- A. 2.5 s
- B. 5.0 s
- C. 7.5 s
- D. 10 s
Explanation: The following is the solution: We will use the equation: h = (1/2)gt2 where: h = vertical distance fallen (in this case, the height of the…
Correct answer: 10 s- A. 0.50 E
- B. 0.71 E
- C. 0.70 E
- D. E
Explanation: The following is the solution: When a projectile is launched at an angle of 45 degrees to the horizontal, its horizontal and vertical…
Correct answer: 0.50 E