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 36 of 71
- A. 120 m
- B. 130 m
- C. 140 m
- D. 180.7 m
- E. 200.3 m
Explanation: (Following is the solution to the given problem.)According to the equation of motion: s= ut + ½ at2 Since the initial velocity would be…
Correct answer: 180.7 m- A. 1560m, 540m
- B. 2560m, 640m
- C. 3560m. 740m
- D. 4560m, 840m
- E. 9595m, 348m
Explanation: R= u²sin2θ/gFor maximum range θ=45So 160²/10= 2650This alone is sufficient to enable us to narrow our answer to just B (do not waste time…
Correct answer: 2560m, 640m- A. 90 degrees
- B. 45 degrees
- C. 75 degrees
- D. 105 degrees
- E. 145 degrees
Explanation: To achieve maximum range, a projectile should be launched at an angle of 45 degrees with the horizontal.
Correct answer: 45 degrees- A. 146 m
- B. 130 m
- C. 132 m
- D. 129 m
- E. 145 m
Explanation: The maximum range of a projectile is achieved when it is launched at an angle of 45 degrees to the horizontal.
Correct answer: 132 m- A. 6.9 m
- B. 9.8 m
- C. 15.6 m
- D. 4.9 m
- E. 3.1 m
Explanation: Attached below is the solution to the question above:
Correct answer: 9.8 m- A. 2 s
- B. 4 s
- C. 6 s
- D. 8 s
- E. 10 s
Explanation: The stone is initially dropped from a height and falls for 3 seconds before being stopped.
Correct answer: 4 s- A. The acceleration vector points opposite to the velocity vector on the way up and in the same direction as the velocity vector on the way down.
- B. The speed at the top of the trajectory is zero.
- C. The object's total speed remains constant during the entire flight.
- D. The horizontal speed decreases on the way up and also decreases on the way down.
- E. The vertical speed decreases on the way up and increases on the way down.
Explanation: The only external force acting on the object is the gravitational force vertically downwards.
Correct answer: The vertical speed decreases on the way up and increases on the way down.- A. 0.5 s
- B. 1 s
- C. 1.7 s
- D. 2 s
- E. 4 s
Explanation: The total flight time of a projectile is determined by the formula: T = (2u sinθ) / g, where 'u' is the initial velocity, 'θ' is the…
Correct answer: 1 s- A. 1.62 m, 24.5 m
- B. 2.22 m, 31 m
- C. 3.22 m, 41 m
- D. 4.22 m, 51 m
- E. 5.22 m, 61 m
Explanation: A stone is thrown horizontally from 2.4m above the ground with a speed of 35 m/s.
Correct answer: 1.62 m, 24.5 m- A. 20 m
- B. 40 m
- C. 60 m
- D. 80 m
Explanation: Given: V(i)= 30m/s Theeta=30° Find: Horizontal Range=? Time=? Solution: Formula: R=v(i)t v(i) =v(i)x= v(i) sin(theeta) Using equations of…
Correct answer: 80 m711. A bomber drops a bomb when it is vertically above the target. It misses the target because of the:
- A. Vertical component of the velocity of bomber
- B. Force of gravity
- C. Acceleration of the bomber
- D. Horizontal component of the velocity of bomber
Explanation: When a bomber drops a bomb, the bomb will follow a projectile trajectory influenced by both the vertical and horizontal components of the…
Correct answer: Horizontal component of the velocity of bomber- A. 2 seconds
- B. 5 seconds
- C. 7 seconds
- D. 10 seconds
- E. 15 seconds
Explanation: Given :u = 98 m/sg = -9.8 m/s². ( As it is thrown upwards)v = 0 (As it will stop after reaching the highest point)Using2gs = v² - u²2 ×…
Correct answer: 10 seconds- A. 9.8 m
- B. 19.6 m
- C. 39.2 m
- D. 78.4 m
Explanation: We can use the 2nd equation of motion: s = ut + 1/2at2 = (0)(4) + (1/2)(9.8)(4)(4) = 78.4m So, the height of the building is 78.4 m.
Correct answer: 78.4 m- A. The height attained by the projectile will be more but the range is less.
- B. Both the height and the range attained by the projectile will be more.
- C. The height attained by the projectile will be less but the range is more.
- D. Both the height and the range attained by the projectile will be less.
Explanation: In the formula for range, it is maximum when the value of sin(2θ) is maximum. This value occurs when 2θ is equal to 90 therefore θ = 45.
Correct answer: The height attained by the projectile will be more but the range is less.- A. Circular
- B. Pendulum motion
- C. Projectile motion
- D. All of these
Explanation: Correct option is D. All these are examples of 2D motion. Two-dimensional (2D) motion means motion that takes place in two different…
Correct answer: All of these- A. 61.9 m
- B. 35 m
- C. 70 m
- D. None
Explanation: Correct option is A The correct solution is given as: As this is numerical thus it can only have one answer.
Correct answer: 61.9 m- A. g
- B. 0
- C. 2g
- D. g/2
Explanation: At the top of the trajectory, the velocity of the projectile is zero but the acceleration is still directed downward and is equal to the…
Correct answer: g- A. Parabolic
- B. Periodic
- C. Hyperbolic trajectory
- D. None of the above
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: None of the above- A. Horizontal velocity
- B. Total velocity
- C. Vertical accelaration
- D. Horizontal acceleration
Explanation: Projectile motion can be analyzed by breaking it down into horizontal and vertical components.
Correct answer: Horizontal acceleration- A. Horizontal velocity
- B. Total velocity
- C. Vertical velocity
- D. None of these options are correct
Explanation: The vertical velocity component of a projectile is 0 at a maximum height due to the action of acceleration due to gravity which acts in…
Correct answer: Vertical velocity