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 29 of 71
- A. -9.8 m/s2
- B. 9.8 m/s2
- C. 0
- D. 5 m/s2
Explanation: at any point of launch, the vertical accelaration is always equal to gravitaional accelaration but with a negative sign because the force…
Correct answer: -9.8 m/s2- A. Car travels 20 km due east
- B. Car travels 20 km due east, then turns around and travels 40 km due west
- C. Car travels 70 km due east
- D. Car travels 30 km due west, then turns around and travels 30 km due east
Explanation: Average velocity = total displacement / total timeAs the time is same, so averge velocity will depend on total displacemnent.AVERAGE…
Correct answer: Car travels 70 km due east- A. m s
- B. m/s
- C. m
- D. m/s2
Explanation: Velocity= displacement/timeor V = m/sWhich is option B.
Correct answer: m/s564. If a squash ball comes to its starting point after bouncing off the wall several times, then...
- A. Its total displacement is zero but its average velocity is non zero.
- B. Its total displacement is non zero but its average velocity is zero.
- C. Both total displacement and average velocity are non zero
- D. Both total displacement and average velocity are zero
Explanation: Since the initial point and final position are the same, the net displacement is zero and velocity is, in essence, the change in…
Correct answer: Both total displacement and average velocity are zero- A. Velocity in x-direction
- B. Velocity in negative x-direction
- C. Acceleration in x-direction
- D. Acceleration in negative x-direction
Explanation: The gradient of a displacement/time graph gives the velocity so Options C and D should not be considered.
Correct answer: Velocity in negative x-direction- A. Positive
- B. Negative
- C. Zero
- D. None of these options are correct
Explanation: The acceleration due to gravity 'g' is positive for falling body and negative for rising body.
Correct answer: Positive- A. 5 m/s2
- B. 6 m/s2
- C. 15 m/s2
- D. 9.8 m/s2
Explanation: In the absence of air resistance, all objects fall near the surface of the earth and move towards the earth with uniform acceleration.
Correct answer: 9.8 m/s2- A. An object moves on a circular path
- B. An object oscillates
- C. An object moves in a straight line
- D. An object moves in a circular pathway
Explanation: Displacement is a vector quantity while distance is scalar. Displacement has direction and magnitude both while distance has magnitude…
Correct answer: An object moves in a straight line- A. Constant
- B. Zero
- C. Linearly varying
- D. Varies as t3
Explanation: Acceleration is the time derivative of velocity. If the velocity function is quadratic, then the derivative should be linear, according to…
Correct answer: Linearly varying- A. Tangential
- B. Radial
- C. Zero
- D. None of these options are correct
Explanation: Since the tangential velocity of the Earth around the Sun is constant (because all the years last the same for the orbit around the Sun)…
Correct answer: Radial- A. Inertia of motion
- B. Inertia of rest
- C. Inertia of turning
- D. Inertia of acceleration
Explanation: An object stays where it is placed, and it will stay there until you or something else moves it.
Correct answer: Inertia of motion- A. Acceleration
- B. Velocity
- C. Speed
- D. Power
Explanation: Velocity is the rate of change in displacement.
Correct answer: Velocity- A. Negative
- B. zero
- C. Positive
- D. Infinite
Explanation: If the speed is increasing, the car has positive acceleration, but when the brakes are applied car slows down, the speed decreases.
Correct answer: Negative- A. -2t
- B. 2t
- C. 2
- D. -2
Explanation: To find the instantaneous velocity at any time for a displacement function, you need to take the derivative of the displacement function…
Correct answer: -2575. Displacement is a:
- A. Vector quantity
- B. Scalar quantity
- C. Neither vector nor scalar quantity
- D. Dimensionless quantity
Explanation: Displacement is defined as the change in position of an object. It is a vector quantity and has a direction and magnitude
Correct answer: Vector quantity- A. Theory of relativity
- B. Aristotle's theory
- C. Einstein's theory
- D. Maxwell's theory
Explanation: Newton's First Law: Inertia Newton's first law states that every object will remain at rest or in uniform motion in a straight line unless…
Correct answer: Aristotle's theory- A. Velocity is positive acceleration is negative
- B. Velocity is neagtive acceleration is negative
- C. Velocity is negative acceleration is zero
- D. Velocity is negative acceleration is positive
Explanation: body is speeding because both velocity and acceleration are in same direction
Correct answer: Velocity is neagtive acceleration is negative- A. 25
- B. 15
- C. 4
- D. 1/4
Explanation: Object moved = 20 metres Time = 5 sec Gradient = 20/5 = 4
Correct answer: 4- A. Object moves and come back to its initial position
- B. Object moves 20 m towards east and 10 m towards west
- C. Object moves 20 m towards east and 10 m towards south
- D. Object moves 20 m towards north and 10 m towards west
Explanation: When object moves 20 m towards east and 10 m towards west , displacement is 20 _ 10 = 10 m Distance = 20 † 10 = 30 m Here , it clearly…
Correct answer: Object moves 20 m towards east and 10 m towards west- A. AA horizontal line
- B. A curve line with a decreasing gradient
- C. A straight line with a constant gradient
- D. A* curve line with increasing gradient
Explanation: Option C is correct as a "constant gradient" means there is a constant change in displacement over change of time so velocity is constant.
Correct answer: A straight line with a constant gradient