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 56 of 71
- A. Zero
- B. v2/r
- C. mv2/r
- D. πr2/mv2
Explanation: Centripetal force always acts towards the centre of the circle, perpendicular to the displacement.
Correct answer: Zero- A. Nm
- B. Degree or radian
- C. N/Kg
- D. Kgm/s
Explanation: Angular displacement is measured in either degrees or radians, depending on the context.
Correct answer: Degree or radian- A. Acceleration
- B. Angular velocity
- C. Angular acceleration
- D. None of these
Explanation: Angular velocity is the rate of velocity at which an object or a particle is rotating around a center or a specific point in a given time…
Correct answer: Angular velocity- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation: Explanation for this question is as follows: Angular Velocity Formula Since the angular velocity of an object is the object's angular…
Correct answer: Option A- A. V = r ω
- B. V = rw2
- C. V = r ω3
- D. V2 = rω
Explanation: Explanation for this question is as follows: linear velocity is the product of the radius 'r' and angular velocity 'w' v=rw
Correct answer: V = r ω- A. V = r ω
- B. α = ∆ω/∆t
- C. α = ∆ω/∆θ
- D. None of these
Explanation: Explanation for this question is as follows:
Correct answer: α = ∆ω/∆t- A. Centripetal force
- B. Centripetal acceleration
- C. Hyperbola
- D. None of these
Explanation: Centripetal force is the force that is required to keep an object moving in a circular path.
Correct answer: Centripetal force- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation: Option A) α=Δω/Δt is the correct option.
Correct answer: Option A- A. a = v2/r
- B. a = v3/r
- C. a2 = v2/r
- D. a = v/r
Explanation: Option A) a = v2/r is the correct option.
Correct answer: a = v2/r- A. The mass of the projectile
- B. The velocity of projection
- C. The angle of projection
- D. The angle as well as velocity of projection
Explanation: The horizontal range of a projectile depends on both the angle and velocity of projection.
Correct answer: The angle as well as velocity of projection- A. 30° with the horizontal
- B. 45° with the horizontal
- C. 60° with the horizontal
- D. 90° with the horizontal
Explanation: The explanation is given below: The horizontal range of a projectile is the maximum distance it can travel horizontally.
Correct answer: 45° with the horizontal- A. Angular speed
- B. Angular velocity
- C. Angular displacement
- D. Angular acceleration
Explanation: Angular displacement is the angle in radians through which a point or line has been rotated in a specified sense about a specified axis.
Correct answer: Angular displacement1113. The angle subtended at the center of a circle by an arc of length equal to its radius is equal to:
- A. One rotation
- B. Half rotation
- C. One degree
- D. One radian
Explanation: In a circle, there are 2 π radians in one full rotation (360 degrees). The length of the arc formed by an angle in radians is given by the…
Correct answer: One radian- A. Along the tangent
- B. Along the axis of rotation
- C. Directed away from the center
- D. Directed towards the center
Explanation: The linear velocity of a body moving along a circular path is directed along the tangent to the circle at the point where the body is…
Correct answer: Along the tangent1115. When a body moves in a circle, the angle between its linear velocity v and angular velocity ω is:
- A. 0°
- B. 45°
- C. 90°
- D. 180°
Explanation: In circular motion, the linear velocity v of a body is always tangent to the circle at any point, while the angular velocity ω is directed…
Correct answer: 90°- A. Along the direction of motion
- B. Towards the centre of the circle
- C. Perpendicular to the center of the circle
- D. Away from the centre of the circle
Explanation: Centripetal acceleration is the acceleration directed towards the center of a circular path.
Correct answer: Towards the centre of the circle- A. At the center
- B. At the top
- C. At the horizontal diameter
- D. At the bottom
Explanation: When a stone is whirled in a vertical circle at the end of a string, the tension in the string is maximum at the bottom of the circle.
Correct answer: At the bottom- A. 20 m
- B. 40 m
- C. 80 m
- D. 19.6 m
Explanation: When analyzing motion in two dimensions, it's crucial to separate the horizontal and vertical components.
Correct answer: 80 m- A. Zero
- B. 2 π mr2 ω2
- C. π mr3 ω2
- D. mr2 ω2
Explanation: In this question, the key concept is understanding that in circular motion with constant angular speed, the work done is zero.
Correct answer: Zero- A. 10 N
- B. 1 N
- C. 100 N
- D. 0.1 N
Explanation: The centripetal force on an object moving in a circular path is given by the formula Fc = mv^2/r, where m is the mass of the object, v is…
Correct answer: 1 N