Laws of Motion

Impulse is equal to:

1. Change in momentum
2. Force × acceleration
3. Mass × distance
4. Velocity × time

The law of conservation of momentum states that:

1. Energy is always zero
2. Momentum remains constant in an isolated system
3. Force is always constant
4. Velocity never changes

Frictional force acts:

1. In the direction of motion
2. Opposite to the direction of motion
3. Perpendicular to motion
4. Upward always

The weight of an object is:

1. Mass × velocity
2. Mass × acceleration due to gravity
3. Force × distance
4. Mass ÷ volume

When a bus suddenly starts moving, passengers fall backward due to:

1. Gravity
2. Inertia of rest
3. Friction
4. Momentum

The SI unit of momentum is:

1. kg m/s
2. N/m
3. kg/m³
4. Joule

The force required to stop a moving body depends on its:

1. Density
2. Momentum
3. Volume
4. Shape

A force of 10 N acts on an object of mass 2 kg. The acceleration produced is:

1. 2 m/s²
2. 5 m/s²
3. 10 m/s²
4. 20 m/s²

The momentum of an object depends on:

1. Mass only
2. Velocity only
3. Both mass and velocity
4. Force only

According to Newton’s Third Law of Motion, action and reaction forces:

1. Act on the same body
2. Are unequal
3. Act on different bodies
4. Cancel each other completely

The product of mass and velocity is called:

1. Force
2. Momentum
3. Acceleration
4. Impulse

The tendency of an object to resist change in its state of motion is called:

1. Momentum
2. Force
3. Inertia
4. Acceleration

Newton’s Second Law of Motion gives the relation between:

1. Force and acceleration
2. Mass and energy
3. Velocity and distance
4. Work and power

The SI unit of force is:

1. Joule
2. Newton
3. Watt
4. Pascal

Newton’s First Law of Motion is also known as:

1. Law of Acceleration
2. Law of Inertia
3. Law of Momentum
4. Law of Gravitation