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 55 of 71
- A. Air pressure
- B. Engine
- C. Shape of the wheels
- D. Force of friction
Explanation: The centripetal force required for a vehicle to move on a curved path is provided by the force of friction between the tires and the road.
Correct answer: Force of friction- A. Degrees
- B. Radians
- C. Grades
- D. Arcs
Explanation: Angular displacement is more conveniently measured in Radians, which is the SI unit for this purpose.
Correct answer: Radians- A. 360
- B. 180
- C. π
- D. 2 π
Explanation: There are 2π radians in a full circle. This value corresponds to a complete revolution, and it is the equivalent of 360°.
Correct answer: 2 π- A. S+r/θ
- B. S=θ/r
- C. S=rθ
- D. S=r2 θ
Explanation: When measuring angles in radians, the correct relation for finding the length of arc S is given by S = rθ.
Correct answer: S=rθ- A. Length of arc
- B. Distance from a fixed point
- C. Angle
- D. None of the above
Explanation: Angular displacement is the angle that a body traces while moving in a circle. It is a measure of how much an object has rotated.
Correct answer: Angle- A. ω = r θ
- B. ω= θ/t
- C. ω=θ2/t
- D. ω=r2/θ
Explanation: The correct formula for angular velocity is ω = θ/t, where ω represents angular velocity, θ is the angle, and t is time.
Correct answer: ω= θ/t- A. One radian
- B. 180 degrees
- C. One revolution
- D. 90 degrees
Explanation: The time period is the time taken for a revolving body to complete one full revolution around the circle.
Correct answer: One revolution1088. The relation between the moment of inertia I, torque τ and angular acceleration α is given by:
- A. τ = I2α
- B. I = τ α
- C. τ = I α
- D. α = τ I
Explanation: Explanation:The correct formula relating torque (τ), moment of inertia (I), and angular acceleration (α) is τ = I α.
Correct answer: τ = I α- A. One dimension
- B. Second dimension
- C. Fourth dimension
- D. None of these
Explanation: Motion in one dimension refers to movement along a straight line or in a single direction.
Correct answer: One dimension1090. Let " Vi" be the initial velocity of any body then, we can write it in the following components as:
- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation: Explanation:The correct approach to this question involves breaking down the initial velocity into its x and y components to find the…
Correct answer: Option A- A. Horizontal
- B. Vertical
- C. Projectile
- D. None of these
Explanation: Projectile motion refers to the curved path taken by an object thrown at an angle and moving freely under gravity's influence.
Correct answer: Projectile- A. Trajectory
- B. Parabola
- C. Velocity
- D. Acceleration
Explanation: Projectile motion involves two simultaneous motions - a uniform horizontal velocity and a uniform vertical acceleration, resulting in a…
Correct answer: Parabola- A. Projectile motion
- B. Tragectory motion
- C. Vertical motion
- D. None of these
Explanation: Explanation:Projectile motion involves the simultaneous motion of a body in two dimensions, with a parabolic path being followed due to…
Correct answer: Projectile motion- A. ax = 0
- B. ax = 10
- C. ax = 4
- D. ax = 40
Explanation: When considering projectile motion, the horizontal acceleration (ax) is usually negligible because there is no horizontal force acting on…
Correct answer: ax = 0- A. ay = g
- B. ay = -g
- C. ay = -a
- D. None of these
Explanation: Acceleration along the y-axis in projectile motion is represented as 'ay = -g', where 'g' is the acceleration due to gravity acting…
Correct answer: ay = -g- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation: Explanation:The correct formula for displacement along the Y-axis in projectile motion is Sy = vy*t + 1/2*g*t^2.
Correct answer: Option B- A. Option A: The sum of horizontal and vertical velocity at the particular point.
- B. Option B: The initial velocity of the projectile.
- C. Option C: The acceleration of the projectile.
- D. Option D: The angle of projection of the projectile.
Explanation: The correct answer is Option A. The velocity of a projectile at any instant is the sum of its horizontal and vertical velocity components…
Correct answer: Option A: The sum of horizontal and vertical velocity at the particular point.- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation: Explanation:The correct formula for maximizing horizontal range is Rmax = u2/g.
Correct answer: Option A- A. t=2usinθ/g
- B. t=sinθ/g
- C. t=2u/g
- D. t=usinθ/g
Explanation: The correct formula for the time of flight of a projectile is t=2usinθ/g.
Correct answer: t=2usinθ/g- A. Acceleration
- B. Initial velocity
- C. Average acceleration
- D. None of these
Explanation: When a projectile is thrown at an angle of 45°, the maximum range is achieved when the initial velocity is optimized.
Correct answer: Initial velocity