Force And Laws Of Motion Mock Tests

22 questions available

Force And Laws Of Motion Mock Test 1

Questions: 22

Sample Questions

Class 9 Science

What happens to the force of friction when the mass of a body sliding on a surface is doubled?

A It becomes half

B It remains the same

C It becomes double

D It becomes four times

Class 9 Science

A force of 25 N acts on a body of mass 5 kg. The acceleration produced is:

A 5 m/s²

B 125 m/s²

C 2 m/s²

D 20 m/s²

Class 9 Science

According to Newton's third law of motion, action and reaction forces:

A act on the same body and cancel each other

B act on different bodies and do not cancel each other

C act on the same body and produce acceleration

D act on different bodies and always produce equilibrium

Class 9 Science

A body of mass 5 kg is accelerated from rest by a force of 20 N. What is its acceleration?

A 2 m/s²

B 4 m/s²

C 10 m/s²

D 100 m/s²

Class 9 Science

A force of 20 N produces an acceleration of 5 m/s² in a body. What is the mass of the body?

A 4 kg

B 100 kg

C 2.5 kg

D 15 kg

Class 9 Science

A force of 10 N acts on a body of mass 2 kg for 3 seconds. The change in momentum of the body is:

A 10 kg·m/s

B 20 kg·m/s

C 30 kg·m/s

D 6 kg·m/s

Class 9 Science

A body moving with a velocity of 10 m/s is brought to rest in 4 seconds by a constant force. The magnitude of the force (mass = 2 kg) is:

A 5 N

B 8 N

C 20 N

D 2 N

Class 9 Science

A force of 50 N acts on a body of mass 10 kg for 4 seconds. The change in velocity of the body is:

A 10 m/s

B 20 m/s

C 50 m/s

D 200 m/s

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