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 68 of 71
- A. 60 & 20
- B. 15 & 30
- C. 75 & 15
- D. 50 & 25
Explanation: For a given initial velocity, the range is the same for angles that add up to 90 degrees, such as 75° and 15°.
Correct answer: 75 & 15- A. Parabolic
- B. Periodic
- C. Hyperbolic trajectory
- D. Linear
Explanation: When a projectile is launched at 90 degrees with respect to the horizontal, it moves vertically upward and then falls back down under the…
Correct answer: Linear- A. 12 m/s^2
- B. 13 m/s^2
- C. 9.8 m/s^2
- D. 7.6 m/s^2
Explanation: When the stone is falling down, it falls in the category of projectile motion and in projectile motion we consider a=g=9.8 m/s^2.
Correct answer: 9.8 m/s^2- A. Parabolic
- B. Periodic
- C. Hyperbolic trajectory
- D. Linear
Explanation: When a projectile is launched at 90 degrees to the horizontal, its trajectory is a perfect vertical line.
Correct answer: Linear- A. Linearly
- B. Remains constant.
- C. Doubles.
- D. Decreases parabolically.
Explanation: The correct answer is Linearly because when a ball is thrown upward, it experiences a constant acceleration due to gravity which acts…
Correct answer: Linearly- A. 30 m/s2
- B. 40 m/s2
- C. 20 m/s2
- D. -10 m/s2
Explanation: Explanation:The acceleration of the body can be calculated using the formula: a = vf - vi / tSubstituting the given values, we get: a =…
Correct answer: -10 m/s2- A. Straight line
- B. Parabola
- C. Horizontal line
- D. Exponential curve
Explanation: Explanation:The slope of the velocity - time graph is equal to acceleration.
Correct answer: Straight line- A. Variable acceleration
- B. Uniform acceleration
- C. Uniform velocity
- D. Negative acceleration
Explanation: The correct answer is uniform acceleration. This is because the definition of uniform acceleration is when the velocity of a body changes…
Correct answer: Uniform acceleration1349. The distance travelled by a moving car with velocity 15m/s in 2s, decelerates at 2m/s2 is equal to:
- A. 30m
- B. 16m
- C. 34m
- D. 26m
Explanation: This is a question from a body moving at constant acceleration for that we have 3 equations of motion vf=vi + at S=vit +1/2at2 2aS=vf2 -…
Correct answer: 26m- A. v1' ≈ −v1 ; v2' ≈ v1
- B. v1' ≈ v1 ; v2' ≈ 0
- C. v1' ≈ v1 ; v2' ≈ 2v1
- D. v1' ≈ −v1 ; v2' ≈ 0
Explanation: Explanation:V1' = (m1 - 0/m1 + 0) v1 + (2(m2) (0)/0 +m2) V1' = (m1 / m2) v1 + 0V1' = v1 + 0V1' = v1V2' = (2m1v1 / m1) + (0 - m1 / m1 + 0)…
Correct answer: v1' ≈ v1 ; v2' ≈ 2v1- A. 0.38m/s
- B. 126m/s
- C. 8.33m/s
- D. 58.33m/s
Explanation: We need to calculate the constant speed, the formula for it is given: speed= distance/time = 150/18 = 8.33m/s Hence the right answer is…
Correct answer: 8.33m/s- A. 24 sec
- B. 2 sec
- C. 12 sec
- D. 8 sec
Explanation: To solve this problem, use the impulse-momentum theorem, which states that the impulse (force multiplied by time) is equal to the change…
Correct answer: 2 sec- A. Linear acceleration is zero
- B. Angular acceleration is zero
- C. Linear acceleration is zero but angular acceleration is not zero
- D. Linear acceleration and angular acceleration both should be zero
Explanation: For a body to be in complete equilibrium, it must not experience any net force or torque.
Correct answer: Linear acceleration and angular acceleration both should be zero- A. 196 N
- B. 19.8 N
- C. 1.98 N
- D. 2 N
Explanation: 19.8 N: This option is the correct value for the tension 'T' when the elevator is descended with an acceleration of 0.1 m/s².
Correct answer: 19.8 N- A. Increased
- B. Decreased
- C. Reduced to zero
- D. Remain Constant
Explanation: As the elevator pushes upward, the downward force, i.e., weight, will appear to increase. Weff = mgeff geff = (g + a)
Correct answer: Increased- A. Un-powered and guided.
- B. Un-guided and powered.
- C. Powered and guided.
- D. Un-powered and un-guided.
Explanation: A ballistic missile follows a ballistic trajectory, these missiles are propelled by a rocket engine for only the first part of its flight…
Correct answer: Un-powered and un-guided.- A. The angle of projection
- B. The initial velocity of projection
- C. The mass of the projectile
- D. Speed and mass of the projectile
Explanation: The horizontal range of a projectile is primarily determined by the angle of projection for a given initial velocity.
Correct answer: The angle of projection- A. v0 sin(θ) / g
- B. 2v0 sin(θ) / g
- C. v0 cos(θ) / g
- D. 2v0 cos(θ) / g
Explanation: The correct formula for the time of flight of a projectile is 2v0 sin(θ) / g, where v0 is the initial velocity, θ is the launch angle, and…
Correct answer: 2v0 sin(θ) / g- A. aS = vf2 - vi2
- B. 2aS = vf2 - vi2
- C. 2S = a(vf2 - vi2)
- D. aS = 2(vf2 - vi2)
Explanation: The correct answer is Option B: 2aS = vf2 - vi2. This is the third equation of motion, which is crucial for determining the maximum height…
Correct answer: 2aS = vf2 - vi2- A. A=1
- B. B=2
- C. C=3
- D. D=4
Explanation: They just made the question confusing In fact it's very simple We have to find the velocity Distance is given as x=t³ Where t=1 So x=1 We…
Correct answer: A=1