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 65 of 71
- A. Non-uniform
- B. Discrete
- C. Instantaneous
- D. Uniform
Explanation: If a body's speed increases equally in equal intervals of time, the time rate of change of speed is known as uniform acceleration.
Correct answer: Uniform- A. Negative
- B. Positive
- C. Zero
- D. None of these options are correct
Explanation: Option B is correct since when velocity increases acceleration will be positive as acceleration is the rate of change of velocity with…
Correct answer: Positive- A. Velocity
- B. Acceleration
- C. Position
- D. Momentum
Explanation: In uniform circular motion, the magnitude of linear velocity remains constant although its direction changes every instant.
Correct answer: Acceleration- A. A car speeding up as it moves southward
- B. A car moving southward at a constant speed
- C. A car slowing down as it moves northward
- D. A car slowing down as it moves southward
Explanation: The rate of change of velocity with respect to time is known as acceleration.
Correct answer: A car slowing down as it moves northward- A. Highest
- B. Lowest
- C. Middle
- D. None of these options is correct
Explanation: Firstly, at the highest point, all kinetic energy has been converted to gravitational potential energy so, there is a lack of kinetic…
Correct answer: Highest- A. Away
- B. Towards
- C. Normally
- D. Tangentially
Explanation: The word "centripetal" also means center-seeking/towards the center. The centripetal acceleration always acts towards the center of the…
Correct answer: Towards- A. V g
- B. V/2g
- C. V/4g
- D. V²/8g E. V²/7g
Explanation: The explanation for this question will be added soon.
Correct answer: V²/8g E. V²/7g- A. Only momentum is conserved
- B. Only total energy is conserved
- C. Only kinetic energy is conserved
- D. Momentum, kinetic energy, and total energy is conserved
Explanation: Kinetic energy and hence momentum is conserved only in elastic collision.
Correct answer: Momentum, kinetic energy, and total energy is conserved- A. Kinetic energy and momentum is conserved
- B. Kinetic energy is conserved but total energy is not conserved
- C. Momentum is conserved but kinetic energy is not conserved
- D. Both kinetic energy and momentum are not conserved
Explanation: An elastic collision is a collision in which there is no net loss in kinetic energy in the system as a result of the collision.
Correct answer: Kinetic energy and momentum is conserved- A. Only momentum is conserved
- B. Only total energy is conserved
- C. Only kinetic energy is conserved
- D. Momentum, kinetic energy, and total energy are all conserved.
Explanation: In such collisions, not only is momentum conserved, but the kinetic energy and total energy of the system also remain constant before and…
Correct answer: Momentum, kinetic energy, and total energy are all conserved.- A. 45°
- B. 45°-a
- C. 45°+a
- D. 90°
Explanation: Tan θ = momentum of first collision/ momentum of second collision= 1 Tan 1 = 45°
Correct answer: 45°- A. 45°
- B. 45°-α
- C. 45°+α
- D. 90°
Explanation: : It is numerical and it can have only one possible answer.
Correct answer: 45°- A. 37˚
- B. 45˚-a
- C. 45˚+a
- D. 90˚
Explanation: Option A is correct since by applying the formula shown in the picture of v1 and v2.
Correct answer: 37˚- A. Falls down
- B. Remains stationary
- C. Goes up
- D. None of above
Explanation: The acceleration of the body does not depend upon the mass of the freely falling body. Hence both man and ball have the same acceleration.
Correct answer: Remains stationary- A. 4√5 km
- B. 40 km
- C. 80 km
- D. 4√2 km
Explanation: Using Pythagoras' theorem, x² = 8² + 4² x = ( 8² + 4²)½ (½ means square root) = (80)½ = (16 × 5)½ = 4 (5)½ The explanation is attached…
Correct answer: 4√5 km- A. Displacement/time
- B. Distance/time
- C. Distance*time
- D. Displacement*time
Explanation: Option A is correct since it states the correct formula for average velocity which is total displacement/total time.
Correct answer: Displacement/time- A. Velocity
- B. Displacement
- C. Acceleration
- D. Distance
Explanation: The slope of the displacement-time graph gives the velocity of an object while the slope of the distance-time graph gives the speed of an…
Correct answer: Velocity- A. 100 km/h
- B. 20 km/h
- C. 80 km/h
- D. 180 km/h
Explanation: Here the two buses are moving in the opposite directions Their speeds are u=100 km/hr and v=80 km/hr ∴ Relative speed =(u+v) km/hr…
Correct answer: 180 km/h- A. Along the tangent
- B. Perpendicular to the slope
- C. Parallel to the radius
- D. Anti-parallel to the radius
Explanation: The tangent to the curve at a given point represents the direction of instantaneous velocity at that point.
Correct answer: Along the tangent- A. Velocity
- B. Displacement
- C. Acceleration
- D. Distance
Explanation: The slope represents the rate of change of displacement with respect to time, which is the definition of velocity.
Correct answer: Velocity