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 25 of 71
- A. 120
- B. 180
- C. 300
- D. 480
Explanation: This is the following solution: F=nmvt=200×0.03×301=180N.
Correct answer: 180- A. The faster one
- B. Depends on their mass
- C. The slower one
- D. Both will reach simultaneously
Explanation: Given, u1>u2 In both cases, the downward acceleration and the initial vertical velocities are the same, they will take the same time to…
Correct answer: Both will reach simultaneously- A. Collision between two vehicles
- B. Collision between glass balls
- C. A bullet fired into a wooden block
- D. Collision between two railway compartments
- E. All of them
Explanation: If there is a loss of kinetic energy during a collision, it is called an inelastic collision.
Correct answer: All of them- A. I, Il and Ill only
- B. I and II only
- C. II and IV only
- D. IV only
- E. None of these
Explanation: Acceleration of free fall acts equally on all masses, this is why both objects despite having different masses have the same speed at any…
Correct answer: II and IV only- A. 40 m
- B. 30 m
- C. 90 m
- D. 120 m
- E. 80.6 m
Explanation: The correct option is 80.6 m i.e. option E. Following is the explanation.
Correct answer: 80.6 m- A. Option A
- B. Option B
- C. Option C
- D. Option D
- E. Option E
Explanation: Average Velocity = 2V1V2/(V1+V2) Let the total distance be x. So time is taken to cover first half =(x/2)/v1=x/(2v1) Time taken to cover…
Correct answer: Option B- A. To every action there is always an equal and opposite reaction
- B. Action and reaction act on the same body
- C. There is no cause-effect relation action and reaction
- D. Action and reaction forces are simultaneous forces
Explanation: Action and reaction act on the same body is not true regarding Newton's third law of motion.
Correct answer: Action and reaction act on the same body- A. 12.5 m/s2
- B. 8 m/s2
- C. 15 m/s2
- D. 16 m/s2
- E. 14 m/s2
Explanation: Solution: S=vit+1/2 at2 36=(0)t+1/2 at2 36=1/2 at2 During 5th second: 36=1/2 a(5)2-1/2 a(4)2 36=1/2 a(25-16) 36=1/2 a(9) 36*2/9=a a=8ms-2
Correct answer: 8 m/s2- A. 50 Nm-1
- B. 25 Nm-1
- C. 75 Nm-1
- D. 100 Nm-1
- E. 125 Nm-1
Explanation: The extension of the spring is 20cm which is 0.2mF=kx5=k(0.2)k=25Nm-1
Correct answer: 25 Nm-1- A. I only
- B. II and III only
- C. I and III only
- D. III only
- E. I, II and III
Explanation: Static equilibrium refers to any system where the sum of the forces, and torque, on every particle of the system happens to be zero.
Correct answer: I, II and III- A. 196 m
- B. 2 m
- C. 1/2 m
- D. 490 m
- E. 98 m
Explanation: s=u(t) + (at2)/2s= 98(t) - 4.9t20 = 98 - 9.81(t)t= 10 ss= 980 -490 = 490m This is the maximum height .
Correct answer: 490 m- A. 0
- B. F/3
- C. F/2
- D. 2F/3
- E. F
Explanation: Since , total mass = m+2m=3m Then when a= F/M (M=3m) so , a*= F/3m → (i) Now, we have to find the force on Y or F(y) = 2ma* Put the value…
Correct answer: 2F/3- A. 2 m/s
- B. 4 m/s
- C. 8 m/s
- D. 9 m/s
- E. 11 m/s
Explanation: Before explosion m1 = 6 kg , u1 = 4m/s After the explosion, it explodes into two pieces, such that m1 = 2kg, v1 = 8m/s, m2 = 4 kg, v2 =?
Correct answer: 2 m/s- A. 4 ms-1
- B. 5 ms-1
- C. 6 ms-1
- D. 8 ms-1
- E. 10 ms-1
Explanation: Option A is correct when we apply the law of conservation of momentum as mv= m1v1+ m2v2 m=m1+m2 = 2+4 = 6kg.
Correct answer: 4 ms-1- A. 20 meters downward
- B. 30 meters downward
- C. 40 meters upward
- D. 50 meters upward
- E. 60 meters upward
Explanation: The displacement is the distance of the rock from the initial position, the initial position of the rock was at the cliff which was 30m.
Correct answer: 30 meters downward- A. F1 is ten times greater than F2
- B. F1 is ten times smaller than F2
- C. F2 is ten times greater than F1
- D. F2 is ten times smaller than F1
- E. F1 is equal to F2
Explanation: The gravitational force between two objects is proportional to the product of their masses and inversely proportional to the square of the…
Correct answer: F1 is equal to F2- A. Much greater than the force experienced by the car
- B. Much lesser than than the force experienced by the car
- C. Same as the force experienced by the car
- D. 10 times less than the force experienced by the car
Explanation: Yes, the same amount of force is imparted on each of them at the moment of the collision.
Correct answer: Same as the force experienced by the car- A. Dependent on the location of the origin
- B. Independent of the location of the origin
- C. Zero
- D. Scalar product
Explanation: When two forces of equal magnitude opposite in direction and acting along parallel straight lines, then they are said to form a couple.
Correct answer: Independent of the location of the origin- A. 500
- B. 8000
- C. 16000
- D. 33000
- E. 64000
Explanation: mass = 100gram = 0.1kg initial velocity (u) = 0 acceleration (a) =20cm per second square =0.2 metre per second square.Time=8 second Final…
Correct answer: 16000- A. 15.8 m
- B. 19.6 m
- C. 25.6 m
- D. 30 m
- E. 60 m
Explanation: Initial velocity = 19.6 m/s Equations of motion = v = u - gt Height h = ut - 1/2 * g * t^2 v = final velocity at max.
Correct answer: 19.6 m