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 39 of 71
- A. 0.5 m
- B. 2 m
- C. 0.2 m
- D. 20 m
Explanation: In this question, we are dealing with motion in two dimensions, specifically the movement of a point on the rim of a wheel.
Correct answer: 2 m- A. 4S = rθ
- B. r= Sθ
- C. S =rθ
- D. S=r/θ
Explanation: Finding an arc length when the angle is given in degrees We know that if θ is measured in radians, then the length of an arc is given by s…
Correct answer: S =rθ- A. A circle
- B. A straight line
- C. A hyperbola
- D. A parabola
Explanation: The explanation is given below: When an object is thrown in an arbitrary direction in space with an initial velocity and is moving freely…
Correct answer: A parabola- A. At the time of projection
- B. At the highest point of its trajectory
- C. Just before hitting the plane of projection
- D. None of the above
Explanation: At the highest point of its trajectory (option B), the vertical component of velocity becomes momentarily zero.
Correct answer: At the highest point of its trajectory- A. At half of the height
- B. At one-fourth of the height
- C. Just before striking the ground and point of projection
- D. None of the above
Explanation: The explanation is given below: The velocity of a projectile is maximum at two points in its trajectory: at the point of projection and…
Correct answer: Just before striking the ground and point of projection- A. Gravitational force
- B. Frictional force
- C. Coulomb force
- D. Cohesive force
Explanation: The force responsible for the circular motion of the electron around the nucleus is the Coulomb force.
Correct answer: Coulomb force767. What will be the value of acceleration if a body of mass 0.5 kg is acted upon by a force of 10 N?
- A. 40 m/s2
- B. 5 m/s2
- C. 10 m/s2
- D. 20 m/s2
Explanation: As m =0.5kg F = 10N Using; F = ma a = F/m a = 10/0.5 a = 20ms^-2. Hence, option D is correct.
Correct answer: 20 m/s2- A. Acceleration
- B. Force
- C. Velocity
- D. Work
Explanation: The time rate of change of momentum is represented as Δp/Δt which is equal to force 'F'. Hence, option B is correct.
Correct answer: Force- A. Force of engine decreases
- B. Balance will not be maintained
- C. Direction of motion will not be effected
- D. Linear momentum increases
Explanation: Rain can make the road surface slippery, reducing traction between the tires and the road.
Correct answer: Balance will not be maintained- A. 4.9 m/s
- B. 9.8 m/s
- C. 19.6 m/s
- D. 39.2 m/s
Explanation: In projectile motion, horizontal component of velocity remains constant, so horizontal velocity after 2 sec will remain 19.6m/sec.
Correct answer: 19.6 m/s- A. 30 kg
- B. 21 kg
- C. 4.8 kg
- D. 3.3 kg
Explanation: Given that; F1 = 2F m1 = 10kg a1= 30m/s^2 F2 = 5F m2 =M a2 = 25 m/s^2 F1 = m1a1 2F = 10 × 30 F = 300/2 F = 150 F2 = m2a2 5(150) = M × 25…
Correct answer: 30 kg- A. Positive x Axis
- B. Negative x Axis
- C. Positive y Axis
- D. Negative y Axis
Explanation: An object has a negative acceleration if an object is moving in a positive direction and slowing down, or moving in a negative direction…
Correct answer: Negative y Axis- A. Parallel
- B. Perpendicular
- C. Antiparallel
- D. Independent
Explanation: Momentum is defined as the product of mass and velocity (p = mv).1. Since mass is a scalar quantity, the momentum vector (p) will always…
Correct answer: Parallel- A. Speed
- B. Velocity
- C. Acceleration
- D. Distance
Explanation: The slope of a velocity-time graph gives us acceleration.Here's why:Slope: In a graph, the slope is defined as the change in the vertical…
Correct answer: Acceleration- A. Unequal distances are covered in equal intervals of time
- B. Equal displacements are made in unequal intervals of time
- C. Unequal displacements are made in equal intervals of time
- D. Equal displacements are made in equal intervals of time
Explanation: When an object covers unequal displacements (changes in position) in equal intervals of time is known as variable velocity.
Correct answer: Unequal displacements are made in equal intervals of time- A. V= E/B
- B. V=B/E
- C. V=ExB
- D. V=0
Explanation: The correct statement is A. V = E/B. In a velocity selector, charged particles with a specific velocity are selected.
Correct answer: V= E/B- A. The particle has a constant acceleration
- B. The particle has never turned around
- C. The particle has zero displacement
- D. The data in insufficient
Explanation: The correct statement is A. The particle has a constant acceleration. A straight line on a velocity-time plot typically indicates that the…
Correct answer: The particle has a constant acceleration778. A man is in a car that is moving with the velocity of 36km/hr.His speed with respect to the car:
- A. 10m/s
- B. 36m/s
- C. Zero
- D. Infinite
Explanation: A man is in a car that is moving with a velocity of 36 km/hr. We want to determine the man's speed with respect to the car.
Correct answer: Zero- A. Car moving on a straight horizontal road
- B. Car moving at constant speed around a bend
- C. Car moving uphill at a constant velocity
- D. Car that is stationary
Explanation: The correct statement is B. Car moving at constant speed around a bend.
Correct answer: Car moving at constant speed around a bend- A. Their momentums are same
- B. Their momentums can be different from each other
- C. Their kinetic energies are different from each other
- D. Their total energies are same
Explanation: This is the accurate statement. As explained above, momentum is a vector.
Correct answer: Their momentums can be different from each other