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 44 of 71
- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation: The correct answer is Option B. When mass M is rotated at the end of the string of length L, it experiences a centripetal force directed…
Correct answer: Option B- A. 40N
- B. 60N
- C. 80N
- D. 20N
Explanation: This is the following solution: Mass(m1) of the first block = 2kg mass(m2) of the second block = 4kg The acceleration of the elevator in…
Correct answer: 40N- A. 17.6 kg m s-1
- B. 17.565 kg ms-1
- C. 17.56 kg ms-1
- D. 17.57 kgms-1
Explanation: p=m⋅vwhere:m=3.513kg, v=5.00m/sp=3.513kg×5.00m/s=17.565kg m/s
Correct answer: 17.565 kg ms-1- A. 1.5 m/s
- B. 60 m/s
- C. 0.1m/s
- D. 5 m/s
Explanation: Step 1: Acceleration of the ship, Applying Newton's law, F=maa= m/F = 5×10 4/3×10 7 = 5/ ×10−3 m/s2Step 2: Final speed of the shipUsing…
Correct answer: 0.1m/s- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation: Explanation is given below: Accelaration is the rate of change of velocity.
Correct answer: Option C- A. Area
- B. Area of a circle
- C. Parabola
- D. Straight line
Explanation: The following is the solution: The statement "the length of a particle is equal to the magnitude of the displacement of that particle"…
Correct answer: Straight line- A. 10 m/s
- B. Zero
- C. 36 km/hr
- D. Infinite
Explanation: The concept of relative velocity is key in this question. When two objects move together at the same speed, their relative velocity is…
Correct answer: Zero- A. 2 km/h
- B. 0 km/h
- C. 0.5 km/h
- D. 0.5 km/s
Explanation: The average velocity is determined by the formula: average velocity = total displacement / total time.
Correct answer: 0 km/h- A. Distance covered
- B. Speed
- C. Momentum
- D. Acceeleration
Explanation: Area under v-t graph represents distance covered by the body.
Correct answer: Distance covered- A. A
- B. B
- C. C
- D. D
Explanation: The correct graph for a particle moving in a straight line with uniform acceleration is the one that shows a constant slope on a…
Correct answer: B- A. 200
- B. 300
- C. 250
- D. 400
Explanation: Distance= Area covered between graph and displacement axis=1/2(30+10)10=200 meter
Correct answer: 200- A. Half
- B. Doubled
- C. One fourth
- D. Constant
Explanation: According to Newton's Second Law of Motion, expressed as F = ma, the force applied on an object is equal to the mass of the object…
Correct answer: Doubled- A. 5N
- B. 100N
- C. 50N
- D. 25N
Explanation: To find the force exerted on the mass, use Newton's second law of motion: F = ma, where F is the force, m is the mass, and a is the…
Correct answer: 100N- A. 15 N
- B. 24 N
- C. 20 N
- D. 30 N
Explanation: To solve this problem, use Newton's Second Law of Motion, F = ma. Initially, determine the object's mass using the given force and…
Correct answer: 30 N- A. 2kg ms-2
- B. 4kg ms-2
- C. 8kg ms-2
- D. 16kg ms-2
Explanation: Rate of change of momentum, ∆ P/ ∆ t, is equal to applied force, F. ∆ P/ ∆ t = Fso ∆ P/ ∆ t = F = 4 kg ms-2
Correct answer: 4kg ms-2- A. A force is equal to the rate of change of momentum of the body upon which it acts.
- B. In a perfectly elastic collision, the total momentum and kinetic energy are conserved before and after the collision.
- C. The momentum of a body is the product of its mass and velocity.
- D. The total momentum of a system of interacting bodies remains constant, provided no external forces act on the system.
Explanation: The correct answer is D: The total momentum of a system of interacting bodies remains constant, provided no external forces act on the…
Correct answer: The total momentum of a system of interacting bodies remains constant, provided no external forces act on the system.- A. 26s
- B. 6s
- C. 5s
- D. 2s
Explanation: To determine the time for which the force acts, we use the equation of motion derived from Newton's second law: F = m × a, where F is the…
Correct answer: 5s- A. 2 cm/sec
- B. 0.2 cm/sec
- C. 20 cm/sec
- D. 2000 cm/sec
Explanation: To find the velocity produced, first convert the force from Dynes to Newtons: 100 Dynes = 0.001 Newtons.
Correct answer: 0.2 cm/sec- A. 40 kg ms-1
- B. 36kg ms-1
- C. 20kg ms-1
- D. 16kg ms-1
Explanation: Explanation is given below: The area under F - t" graph represents changes in momentum, since ∆ P/ ∆ t = Fchange in P= area of triangle +…
Correct answer: 20kg ms-1- A. The spheres stick together on impact
- B. The total kinetic energy before impact is zero
- C. The total kinetic energy after impact is mv2
- D. The total momentum before impact is 2mv
Explanation: Kinetic energy is conversed for elastic collision. As the mass and velocity of the spheres is same their kinetic energy would also be same…
Correct answer: The total kinetic energy after impact is mv2