SSC CGL MCQ Practice 2026

Physics - Force & Laws of Motion Questions for SSC CGL (with Answers)

12 Physics - Force & Laws of Motion MCQs from the General Awareness section, with answers and short explanations.

Score: 0 / 0

Q1. A force of 20 N acts on a body of mass 4 kg. The acceleration produced is:

Show answer

Answer: A. 5 m/s²

a = F/m = 20/4 = 5 m/s².

Physics - Force & Laws of Motion · easy · Beginner Practice Set 2

Q2. Ball bearings are used in machines mainly to:

Show answer

Answer: B. Reduce friction

Ball bearings replace sliding friction with smaller rolling friction.

Physics - Force & Laws of Motion · easy · Beginner Practice Set 3

Q3. Passengers in a bus lurch forward when the bus stops suddenly. This is due to:

Show answer

Answer: B. Inertia of motion

The passengers' bodies tend to continue moving forward due to inertia of motion when the bus stops.

Physics - Force & Laws of Motion · easy · Beginner Practice Set 4

Q4. The recoil of a gun when a bullet is fired is explained by Newton's:

Show answer

Answer: C. Third law of motion

The gun pushes the bullet forward and the bullet pushes the gun back equally — Newton's third law.

Physics - Force & Laws of Motion · easy · Beginner Practice Set 4

Q5. The tendency of a body to resist any change in its state of rest or uniform motion is called:

Show answer

Answer: D. Inertia

Inertia is the property of a body to resist change in its state of rest or motion.

Physics - Force & Laws of Motion · easy · Beginner Practice Set 8

Q6. A body of mass 2 kg moving at 3 m/s has a momentum of:

Show answer

Answer: B. 6 kg m/s

p = mv = 2 × 3 = 6 kg m/s.

Physics - Force & Laws of Motion · easy · Beginner Practice Set 9

Q7. A cricketer pulls his hands back while catching a fast ball in order to:

Show answer

Answer: D. Increase the time of impact and reduce the force

Moving the hands back increases the time over which momentum changes, reducing the force on the hands.

Physics - Force & Laws of Motion · medium · Intermediate Practice Set 1

Q8. The force that keeps a body moving in a circular path, directed towards the centre, is called:

Show answer

Answer: C. Centripetal force

Centripetal force acts towards the centre and keeps a body in circular motion.

Physics - Force & Laws of Motion · medium · Intermediate Practice Set 6

Q9. Rocket propulsion works on the principle of:

Show answer

Answer: D. Conservation of momentum

Gases expelled backward carry momentum, so the rocket gains equal forward momentum, conserving total momentum.

Physics - Force & Laws of Motion · medium · Intermediate Practice Set 7

Q10. Impulse of a force is equal to the:

Show answer

Answer: C. Change in momentum

Impulse = F × t, which equals the change in momentum of the body.

Physics - Force & Laws of Motion · medium · Intermediate Practice Set 7

Q11. A force of 10 N acts on a 5 kg body for 2 s. The change in its velocity is:

Show answer

Answer: C. 4 m/s

a = 10/5 = 2 m/s², so Δv = 2 × 2 = 4 m/s.

Physics - Force & Laws of Motion · hard · Advanced Practice Set 1

Q12. A bullet of mass 0.02 kg is fired at 400 m/s from a gun of mass 4 kg. The recoil speed of the gun is:

Show answer

Answer: C. 2 m/s

4 × v = 0.02 × 400 = 8, so v = 2 m/s.

Physics - Force & Laws of Motion · hard · Advanced Practice Set 7

More General Awareness topics