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.
Last updated
1,416 questions · page 42 of 71
- A. Distance
- B. Force
- C. Acceleration
- D. Speed
Explanation: The gradient of velocity with respect to time represents the rate of change of velocity over time, which is defined as acceleration.
Correct answer: Acceleration- A. 10km/h
- B. 130km/h
- C. 65 km/h
- D. 5km/h
Explanation: When two objects are moving in opposite directions, their relative velocity is the sum of their individual velocities.
Correct answer: 130km/h- A. positive
- B. negative
- C. zero
- D. constant
Explanation: The slope of a distance-time graph cannot be negative. This is because distance is a scalar quantity and cannot have a negative value.
Correct answer: negative- A. v1' = 0, v2' = 0
- B. v1' = v2, v2' = 0
- C. v1' = v1, v2' = v2
- D. v1 = v2, v2' = v1
Explanation: a one-dimensional elastic collision between two bodies of equal mass, their velocities are exchanged.
Correct answer: v1 = v2, v2' = v1- A. Equal to g
- B. Greater than g
- C. Less than g
- D. Zero
Explanation: When a magnet falls inside a long copper tube, it experiences a phenomenon called electromagnetic damping or electromagnetic braking.
Correct answer: Less than g- A. The effect of force
- B. The existence of a force
- C. The existence of two forces
- D. The existence of a pair of forces in nature
Explanation: According to the third law all the actions have reactions that's why any force does not occur as a single it will be affected by the other…
Correct answer: The existence of a pair of forces in nature- A. 2 s
- B. 4 s
- C. 8 s
- D. 10 s
Explanation: According to second law of motion;h = vit + 1/2 at²Where, vi = 0So,h = 1/2 gt²t = √2h/gt = √2×80 ÷ 10t = √16t = 4
Correct answer: 4 s- A. Distance
- B. Force
- C. Acceleration
- D. Length
Explanation: Displacement is the shortest distance between the initial and final points.
Correct answer: Distance- A. Moment of force
- B. Force
- C. Angular momentum
- D. Torque
- E. Moment
Explanation: The rate of change of momentum (delta P) in unit time t is equal to force.
Correct answer: Force- A. The body moves with decreasing velocity
- B. The body moves with variable acceleration
- C. The body moves with uniform velocity
- D. The body moves with uniform acceleration
- E. The body moves with increasing velocity
Explanation: If the instantaneous velocity is equal to average velocity then the body is moving with uniform velocity.
Correct answer: The body moves with uniform velocity831. A body starts from rest and falls freely under gravity; the distance covered by it in t' seconds is:
- A. 0.5gt^2
- B. gt
- C. 0.5g
- D. g
Explanation: The distance s covered by a body falling freely under gravity in t seconds, starting from rest, is given by the equation:s=1/2gt2
Correct answer: 0.5gt^2- A. Dissipates after collision
- B. Increases after the collision
- C. Reduces after the collision
- D. Before and after collision remains the same
Explanation: In an elastic collision, the total kinetic energy before the collision is equal to the total kinetic energy after the collision, meaning…
Correct answer: Before and after collision remains the same- A. Speed of an object
- B. Velocity of an object
- C. Distance covered by object
- D. Acceleration of an object
Explanation: The distance covered by an object is given by the area under the v-t graph.
Correct answer: Distance covered by object- A. Weight
- B. Inertia
- C. Speed
- D. Acceleration
Explanation: According to Newton's second law the mass of a body is the quantitative measure of its inertia.
Correct answer: Inertia- A. Impulse
- B. Force
- C. Torque
- D. Velocity
Explanation: The correct answer is Force. Newton's Second Law states that the force acting on an object is equal to the rate of change of its momentum…
Correct answer: Force836. If the slope of velocity-time graph gradually decreases, then the body is said to be moving with:
- A. Positive acceleration
- B. Negative acceleration
- C. Uniform velocity
- D. Zero acceleration
Explanation: On a velocity-time graph, the slope represents acceleration. A gradually decreasing slope indicates that the acceleration is negative…
Correct answer: Negative acceleration- A. Acceleration
- B. Momentum
- C. Speed
- D. Velocity
Explanation: The quantity of motion in a body is commonly referred to as momentum.
Correct answer: Momentum- A. Displacement-Time graph
- B. Force-time graph
- C. Speed-time graph
- D. Velocity-time graph
Explanation: The gradient of velocity time graph is acceleration.
Correct answer: Velocity-time graph839. If kinetic energy of a body becomes four times of the initial value, then the new momentum will
- A. become twice of its initial value
- B. become three times of its initial value
- C. become four times of its initial value
- D. remain constant
Explanation: According to the formula K.E=p2/2m, if the kinetic energy of a body becomes four times its initial value, the new momentum will be twice…
Correct answer: become twice of its initial value- A. Friction
- B. Inertia
- C. Mass
- D. Weight
Explanation: Inertia is the property of an object to resist changes in its state of motion.
Correct answer: Inertia