# Laws of Motion

In this quiz, you will find questions related to newton’s three laws of motion, inertia, momentum, etc.

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People sitting in a moving bus experience a jerk when the bus stops. This is due to _____

Inertia of motion Inertia of rest Inertia of turning Inertia of acceleration

Passengers sitting in a stationary car experience a jerk when the car suddenly starts. This is due to _____

Inertia of motion Inertia of rest Inertia of turning Inertia of acceleration

Inertia is _____

Property of mass to remain unchanged Property of mass to change continuously Property of mass to accelerate Tendency of mass to accelerate

Why do we not experience any leaning when a train takes a turn?

Because the train is powerful Because of large turning radius Because the train does not turn Because the driver is smart

A straight moving bus takes a sharp right turn. What will happen to the passengers sitting inside the bus?

They will tilt rightwards They will tilt leftwards They will stay the way they were They will start jumping

A spring balance is attached to the ceiling of a lift. A man hangs his bag on the spring and the spring reads 49 N, when the lift is stationary. If the lift moves downwards with an acceleration of 5 m/s, the reading of the spring balance will be

15 N 24 N 49 N 74 N

Two forces 6 N and 8 N act at a point O. If the angle between the lines of action of the force is 90°, then their resultant is

14 N 12 N 10 N 48 N

A body of mass 15 kg moving with a velocity of 10 m/s has its velocity reduced to 6 m/s in two seconds. The force that produced this change in velocity is

60 N 30 N 45 N 20 N

The frame of reference attached to a satellite of the earth is

an inertial frame an absolute frame at rest with respect to the stars a non – inertial frame a gravitational frame

A machine gun fires a bullet of mass 40 g with a velocity of 1200 ms-1. The man holding it can exert a maximum force on 144 N on the gum. How many bullets can he fire per second at the most?

one four two three

A spherical ball of mass 10-6 kg hits a wall 1000 times per second normally with a velocity of 1000 m/s and rebounds with same velocity along the initial direction. The force experienced by the wall is

1 N 4 N 2 N 8 N

The force required to produce an acceleration of 2 m/s² on a mass of 2 kg is

4 N 10 N 22 N 18 N

A passenger in a moving bus is thrown forward when the bus is suddenly stopped. This is explained

by Newtons first law by Newtons second law by Newtons third law by the principle of conservation of momentum

A passenger sitting in a bus moving at uniform speed, feels pushed backward whenever the bus is accelerated forward. This type of force is called

Gravitational force real force fictitious force or pseudo force frictional force

A body of mass 5 kg is travelling with a uniform velocity of 2 m/s. Its momentum is

10 kg m/s 7 kg m/s 2 .5 kg m/s 3 kg m/s
Quiz/Test Summary
Title: Laws of Motion
Questions: 15
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