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 12 of 71
- A. Its direction may be changing
- B. Its acceleration is zero
- C. Its velocity is increasing
- D. None of these
Explanation: The correct answer is Option C: Its velocity is increasing. When a body moves with constant acceleration, its velocity changes uniformly…
Correct answer: Its velocity is increasing- A. Area
- B. Area of a circle
- C. Parabola
- D. Straight line
Explanation: The correct answer is Straight line. When a particle moves in a straight line, the length of the path it travels is exactly equal to the…
Correct answer: Straight line- A. Zero
- B. greater than distance it covered
- C. Equal to the distance it covered
- D. Depends on the surrounding
Explanation: The correct answer is Option A because after completing one cycle, the object returns to its initial position, resulting in zero…
Correct answer: Zero- A. 0 m/s
- B. 5 m/s
- C. 10 m/s
- D. 7.07 m/s
Explanation: When an object falls freely under the influence of gravity, its final velocity just before hitting the ground can be calculated using the…
Correct answer: 10 m/s- A. 1 s
- B. Between 1 and 2 s
- C. 2 s
- D. Between 2 and 3 s
Explanation: The area under a velocity-time graph represents the displacement of the object.
Correct answer: Between 1 and 2 s- A. 3 x 10^8 m/s
- B. 2.97 x 10^6 m/s
- C. 3.10 x 10^5 m/s
- D. 300 m/s
Explanation: To find the velocity of the radar signal, first calculate the total distance it covers by considering the round trip.
Correct answer: 3 x 10^8 m/s- A. p = 1/2, q = 1/2
- B. p = 1/2, q = 1
- C. p = 1, q = 1/2
- D. p = 1, q = 1
Explanation: The velocity of a freely falling object can be derived from the kinematic equation: v = sqrt(2gh), where v is velocity, g is acceleration…
Correct answer: p = 1/2, q = 1/2- A. Vector addition
- B. Vector multiplication
- C. Vector subtraction
- D. Both A and B are correct
Explanation: The correct answer is Option A: Vector addition. Vector addition is commutative because the order in which two vectors are added does not…
Correct answer: Vector addition- A. 2m/s
- B. 5m/s
- C. 25m/s
- D. √7m/s
Explanation: The correct answer is Option B: 5m/s. This result is obtained by applying the Pythagorean theorem to calculate the magnitude of the vector…
Correct answer: 5m/s- A. Perpendicular to each other
- B. Parallel to each other
- C. Can never be zero
- D. Both A and B are correct
Explanation: The correct answer is that the cross product of two vectors is zero when the vectors are parallel.
Correct answer: Parallel to each other- A. The acceleration is zero.
- B. The acceleration is directed outward from the center of the circle.
- C. The acceleration is directed inward toward the center of the circle.
- D. The acceleration is constant in magnitude and direction.
Explanation: When a car travels around a circular track at a constant speed, its velocity is changing because the direction of motion is constantly…
Correct answer: The acceleration is directed inward toward the center of the circle.- A. Decreases
- B. Increases
- C. Remains constant
- D. Varies irregularly
Explanation: The correct answer is 'Decreases'. As you move higher above the Earth, the gravitational force becomes weaker, leading to a decrease in…
Correct answer: Decreases- A. 110 m/s
- B. 55 m/s
- C. 550 m/s
- D. 1.1 m/s
Explanation: Area under an acceleration time graph gives the change in velocity. As the particle is starting from rest Vinitial = 0 so…
Correct answer: 55 m/s- A. The particle has a linear motion
- B. The particle has a circular motion
- C. The acceleration of the particle is constant
- D. The velocity of the particle is constant
Explanation: When a particle experiences a force that is always perpendicular to its velocity, the force alters the direction of the velocity without…
Correct answer: The particle has a circular motion- A. 125 N
- B. 250 N
- C. 375 N
- D. 625 N
Explanation: To find the tension in the left chain, consider the principles of equilibrium.
Correct answer: 375 N- A. The distance between the rocks increases while both are falling.
- B. The acceleration is greater for the more massive rock.
- C. They strike the ground more than half a second apart.
- D. They strike the ground with the same kinetic energy.
Explanation: The correct answer is Option A: The distance between the rocks increases while both are falling.
Correct answer: The distance between the rocks increases while both are falling.237. kg.m/s² is unit of :
- A. Gravity
- B. Momentum
- C. Force
- D. Velocity
Explanation: The correct answer is Option C. According to Newton's second law of motion, force is the product of mass and acceleration, and its unit is…
Correct answer: Force- A. 1.0 x 10^-67 N
- B. 1.0 x 10^-45 N
- C. 1.0 x 10^-22 N
- D. 1.0 x 10^-89 N
Explanation: The correct answer is Option B: 1.0 x 10-45 N. The gravitational force between two objects can be determined using Newton's Law of…
Correct answer: 1.0 x 10^-45 N- A. 13.4 N to the left
- B. 3.4 N to the right
- C. 125 N to the left
- D. 125 N to the right
Explanation: To find the resultant force, decompose each force into its horizontal and vertical components using trigonometric functions (sin and cos).
Correct answer: 13.4 N to the left- A. F = ma
- B. τ = Iα
- C. F = P/t
- D. All of the above
Explanation: The correct answer is τ = Iα, which is the angular analog of Newton's second law.
Correct answer: τ = Iα