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 40 of 71
- A. Variable
- B. Constant
- C. May be variable or constant
- D. Infinite
Explanation: The correct answer is B. When the slope of a displacement-time graph is constant, the velocity of the object is also constant.
Correct answer: Constant- A. 3N
- B. 30N
- C. 300N
- D. 3000N
Explanation: m=8 kg, v=3 m/s, x=0.12 mFrictionless surfaceWe are asked for the retarding force of the spring.The spring force is not constant (it's…
Correct answer: 300N- A. 1/5 times that of B
- B. 1/3 times that of B
- C. The same as B
- D. nine times that of B
Explanation: According to Newton's second law, F = ma, where F is the force, m is the mass, and a is the acceleration.
Correct answer: 1/5 times that of B- A. North
- B. South
- C. West
- D. East
Explanation: Displacement refers to the change in position of an object and is a vector quantity, meaning it has both magnitude and direction.
Correct answer: South- A. 4 N
- B. 25 N
- C. 100 N
- D. 2500 N
Explanation: The momentum of the body is given as 100 kg m/s, and the time taken to stop it is 25 seconds.
Correct answer: 4 N- A. 3 sec
- B. 4 sec
- C. 18 sec
- D. 5 sec
Explanation: To determine the time it takes for a stone to drop from a height of 125 meters, we can use the formula for free fall:t = √(2h/g)Where:t =…
Correct answer: 5 sec- A. 40 N
- B. 20 N
- C. 10 N
- D. 5 N
Explanation: The following is the solution:Let a be the acceleration of the system,F is the net pulling force on m1,T is the tension force exerted by…
Correct answer: 20 N- A. 3W will be farthest
- B. W will be farthest
- C. All will be at the same distance
- D. 2W will be farthest
Explanation: The following is the solution:At the time of free fall, Apparent weight=0, for all objects,As it is a weightlessness condition, the masses…
Correct answer: All will be at the same distance- A. A only
- B. B only
- C. Both A and B
- D. Neither A nor B
Explanation: The following is the solution:By applying by a constant force on a frictionless table, all blocks move with the same acceleration.
Correct answer: A only- A. Much greater than the force experienced by the car
- B. Much less than the force experienced by the car
- C. Equal to the force experienced by the car
- D. Cannot be determined without knowing the masses of the car and the housefly
Explanation: According to Newton's third law of motion, for every action, there is an equal and opposite reaction.
Correct answer: Equal to the force experienced by the car- A. 19.6 m
- B. 39.2 m
- C. 9.8 m
- D. 7.84 m
Explanation: This is the correct answer. We can use the equation of motion: v^2 = u^2 + 2as, where v is the final velocity (0 m/s at the maximum…
Correct answer: 19.6 m- A. 38 meters
- B. 50 meters
- C. 25 meters
- D. 43 meters
Explanation: To find the position of the cyclist at t=2t = 2t=2 seconds, we can use the equations of motion for uniformly accelerated linear motion.
Correct answer: 43 meters- A. Velocity and acceleration
- B. Kinetic energy, velocity
- C. Acceleration, velocity
- D. Kinetic energy and acceleration
Explanation: When a ball is thrown vertically upwards, it experiences a constant acceleration due to gravity, which is approximately -9.8 m/s².
Correct answer: Acceleration, velocity- A. 10
- B. 20
- C. 28
- D. 56
Explanation: Using the equation of motion:v² = u² + 2aswhere:v = final velocity (at signal B)u = initial velocity (at signal A) = 20 m/sa =…
Correct answer: 28- A. It will decelerate and eventually stop
- B. Continue to move in a straight line at constant velocity
- C. It will stop immediately
- D. Its velocity will increase while moving in a straight line
Explanation: According to Newton's First Law of Motion, also known as the Law of Inertia, an object at rest will remain at rest, and an object in…
Correct answer: Continue to move in a straight line at constant velocity- A. Increased
- B. Zero
- C. Decreased
- D. Increased and then decreased
Explanation: According to the principle of relativity, if an object is at rest or moving with a constant velocity in one inertial frame, it will also…
Correct answer: Zero- A. Acceleration
- B. speed
- C. velocity
- D. Deceleration
Explanation: This is the rate at which displacement changes with respect to time. It is a vector quantity, meaning it has both magnitude and direction.
Correct answer: velocity- A. law of conservation of energy
- B. momentum
- C. law of conservation of velocity
- D. All
Explanation: Newton's 3rd law of motion states: "For every action, there is an equal and opposite reaction." This means that when object A exerts a…
Correct answer: momentum- A. The force of gravity acting on an object
- B. The resistance of an object to a change in its state of motion
- C. The weight of an object
- D. The acceleration of an object due to applied force
Explanation: Inertia is the property of an object to resist changes in its state of motion.
Correct answer: The resistance of an object to a change in its state of motion- A. Zero
- B. 9.81
- C. 90 degrees
- D. Equal to the final velocity of the motion
Explanation: The minimum gradient (slope) is zero at the highest point where velocity is momentarily zero.
Correct answer: Zero