Laws of Motion

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

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

Inertia is _____

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

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

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

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

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

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

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?

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

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

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

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

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