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 51 of 71
- A. 0, v/2
- B. -v, v
- C. -v/3, 2v/3
- D. -2v/3, v/3
Explanation: In a head-on elastic collision, both momentum and kinetic energy are conserved.
Correct answer: -v/3, 2v/3- A. m >> M
- B. m = M
- C. m << M
- D. m = M/2
Explanation: In a perfectly elastic head-on collision, both momentum and kinetic energy are conserved.
Correct answer: m = M- A. - 14m/s and 13 m/s
- B. -13 m/s and 14 m/s
- C. 0 and 13 m/s
- D. 0 and 14 m/s
Explanation: When masses of the two balls are equal. mA = mB = m v'A=vB v'B = vA The velocities of the balls are interchanged after collision.
Correct answer: - 14m/s and 13 m/s- A. 0.75
- B. 1.33
- C. 3.0
- D. 4.0
Explanation: To solve this problem, we use the law of conservation of linear momentum.
Correct answer: 3.0- A. 22.36m
- B. 25m
- C. 25.5m
- D. 30m
Explanation: The correct answer is 22.36m. Displacement is the shortest distance between the initial and final positions.
Correct answer: 22.36m- A. 15 m/s
- B. 10 m/s
- C. 7.5 m/s
- D. 5 m/s
Explanation: The average velocity is defined as the total displacement divided by the total time taken.
Correct answer: 5 m/s1007. An aeroplane 400 m north and 300 m south and then flies 1200 m upwards then net displacement is
- A. 1200 m
- B. 1300 m
- C. 1400 m
- D. 1204 m
Explanation: To find the net displacement, first calculate the resultant north-south movement: 400 m north - 300 m south = 100 m north.
Correct answer: 1204 m- A. Zero
- B. 2R
- C. 27πR
- D. 7πR
Explanation: The athlete completes one full round of the circular track in 40 seconds.
Correct answer: 2R- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation: Displacement in the 1st half time = v1t Displacement in the 2nd half time = v2t and use simple formula to find mean velocity/average…
Correct answer: Option A- A. 0N
- B. 10N
- C. 20N
- D. 200N
Explanation: The correct answer is 0 N. According to Newton's first law of motion, an object at rest remains at rest unless acted upon by a net…
Correct answer: 0N- A. S
- B. 4S
- C. 2S
- D. 16S
Explanation: The stopping distance is proportional to the square of the speed of the vehicle.
Correct answer: 16S- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation: 4H = R tanθ If R= H 4H = tanθ ⟹ tanθ = 4 ⟹ 0 = tan-1 (4)= 76o
Correct answer: Option B- A. The stone will reach the ground first
- B. The bullet will reach the ground first
- C. Both will reach the ground at the same time
- D. None of these
Explanation: When a bullet is fired horizontally and a stone is dropped from the same height, both objects are influenced by gravity equally.
Correct answer: Both will reach the ground at the same time- A. 6 m s-2
- B. 12 m s-2
- C. 3 m s-2
- D. 1.5 m s-2
Explanation: The engine initially provides an acceleration of 6 m s-2 to the car. When a second car of the same mass is added, the total mass being…
Correct answer: 3 m s-2- A. 55 m/s
- B. 550 m/s
- C. 110 m/s
- D. 650 m/s
Explanation: Vmax = area of triangle= 1/2 x 11 x 10 = 55m/s
Correct answer: 55 m/s- A. 0.5 m/s2
- B. 2 m/s2
- C. 1.6 m/s2
- D. 0.2 m/s2
Explanation: The problem asks for the acceleration of the sledge. According to Newton's Second Law, the net force acting on an object is equal to the…
Correct answer: 1.6 m/s2- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation: Weight of the swimmer = mg = (60) (10) = 600 NResultant force = ma (60) (16) = 960 N
Correct answer: Option C- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation: As velocity of an object is increasing uniformly so it's acceleration is constant.
Correct answer: Option A1019. If a body starts from rest and travels 120 cm in the 6th second, then what is the acceleration
- A. 0.20 m / s2
- B. 0.218 m / s2
- C. 0.027 m / s2
- D. 0.03 m / s2
Explanation: To find the acceleration, use the formula for the distance covered in the nth second of uniformly accelerated motion, which is given by…
Correct answer: 0.218 m / s21020. If a car at rest accelerates uniformly to a speed of 144km/h in 20 s. Then it covers a distance of
- A. 20 m
- B. 1440 m
- C. 400 m
- D. 2880 m
Explanation: The car starts from rest, so the initial velocity (u) is 0 m/s. The final velocity (v) is 144 km/h, which converts to 40 m/s.
Correct answer: 400 m