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 35 of 71
- A. Distance is always greater than or equal to displacement
- B. Distance is always less than displacement
- C. Distance is always equal to displacement
- D. The answer cannot be determined
Explanation: The correct answer is that distance is always greater than or equal to displacement.
Correct answer: Distance is always greater than or equal to displacement- A. 2pi r
- B. 2r
- C. pi r
- D. zero
Explanation: Displacement is a vector quantity so it depends on direction and in a circle the initial point is the same as the final position so the…
Correct answer: zero- A. v/4
- B. v/2
- C. v
- D. 5v/4
Explanation: This problem involves an inelastic collision where two railway trucks stick together after colliding.
Correct answer: v/4- A. Zero
- B. 800 𝑁 upward
- C. 800 𝑁 downward
- D. 240 𝑁 downward
Explanation: The correct answer is zero net force. Since the paratrooper is descending at a constant velocity, there is no acceleration (Newton's first…
Correct answer: Zero- A. One of them is not related to forces
- B. Two of them are not related to forces
- C. All of them are related to forces
- D. One of them is related to forces
Explanation: Newton's laws of motion are all related to forces. The first law (Law of Inertia) describes how an object remains at rest or in uniform…
Correct answer: All of them are related to forces- A. -500 N
- B. -1500 N
- C. -2500 N
- D. -3500 N
Explanation: To solve this problem, apply Newton's second law which relates force to mass and acceleration.
Correct answer: -2500 N- A. Only momentum remains conserved
- B. Only kinetic energy remains conserved
- C. Both momentum and kinetic energy are conserved
- D. Neither kinetic energy nor momentum is conserved
Explanation: In this scenario, neither kinetic energy nor momentum is conserved. The law of conservation of momentum applies only to isolated systems…
Correct answer: Neither kinetic energy nor momentum is conserved- A. 15ms-1
- B. 7.5ms-1
- C. 10ms-1
- D. 5ms-1
Explanation: The average velocity is defined as the total displacement divided by the total time taken.
Correct answer: 5ms-1- A. A particle moving in a circular path
- B. The momentum of the particle remains constant
- C. A particle moving along a straight line with constant speed
- D. Constant acceleration of the particle
Explanation: The correct answer is Option B: 'The momentum of the particle remains constant.' This indicates no net external force is acting on it, in…
Correct answer: The momentum of the particle remains constant- A. +4 kg·m/s
- B. -4 kg·m/s
- C. +8 kg·m/s
- 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 = 3S1
- D. 2S2 = 3S1
Explanation: To find the distance traveled in a specific second under constant acceleration, use the formula for the distance covered in the nth…
Correct answer: S2 = 3S1- A. 2 kg·m/s2
- B. 8 kg·m/s2
- C. 4 kg·m/s2
- D. 16 kg·m/s2
Explanation: The rate of change of momentum (also known as force) can be calculated using the formula: F = Δp/t, where Δp is the change in momentum.
Correct answer: 4 kg·m/s2- A. The lead ball experiences a greater change in momentum than the tennis ball.
- B. The tennis ball experiences a greater change in momentum than the lead ball.
- C. The momentum of the lead ball is greater than that of the tennis ball.
- D. Both balls experience an equal change in momentum.
Explanation: The correct answer is that the tennis ball experiences a greater change in momentum than the lead ball.
Correct answer: The tennis ball experiences a greater change in momentum than the lead ball.- A. Zero
- B. 1 ms-1
- C. 2 ms-1
- D. 4 ms-1
Explanation: The following is the solution: Given: r = 2mVelocity = displacement/timeFor semicircle; Displacement = 2r =4 mt = 2 secvelocity = 4/2 = 2m/s
Correct answer: 2 ms-1- A. The first condition of equilibrium but not the second
- B. The second condition of equilibrium but not the first
- C. Both the first and second conditions of equilibrium
- D. Neither the first nor the second condition of equilibrium
Explanation: The correct answer is Option C: Both the first and second conditions of equilibrium.
Correct answer: Both the first and second conditions of equilibrium- A. 6.3 ms-2
- B. 5.3 ms-1
- C. 13 ms-1
- D. 12.5 ms-1
Explanation: Initial velocity, u=15m/sFinal velocity, v=0m/sDistance, s=18mAcceleration, a=?Using relation, v2 −u2 =2as02 −(15)2 =2a×18−225=36aa= 36…
Correct answer: 6.3 ms-2- A. The frequency of the string
- B. The displacement of the string
- C. The tension in the string
- D. The wavelength of the string
Explanation: When a body is suspended by a string, the downward gravitational force (weight) is balanced by an upward force called tension.
Correct answer: The tension in the string- A. ln front of him
- B. In his hand
- C. Behind him
- D. Beside him
Explanation: At the time of throwing the ball, it inherits velocity of platform at that moment .
Correct answer: Behind him- A. Horizontal acceleration is zero
- B. Vertical acceleration is zero
- C. Horizontal force is constant
- D. Vertical speed is constant
Explanation: Air resistance acts on horizontal component, mainly. In the absence of air resistance, there will be no horizontal acceleration.
Correct answer: Horizontal acceleration is zero- A. 9.8s
- B. 0s
- C. 10s
- D. 1s
Explanation: To solve the problem, we use the following steps:1. The horizontal velocity (Vx) remains constant at 9.8m/s, as there is no acceleration…
Correct answer: 1s