Mechanics PYQ

A bullet of mass 10 g moving with 400 m/s penetrates a wall and comes to rest. The loss in kinetic energy is:

A body of mass 5 kg is moving with a velocity of 10 m/s. The kinetic energy of the body is:

According to Newton's second law, the net force acting on a body is:

A ball is thrown vertically upward with velocity 20 m/s. The maximum height reached is (g = 10 m/s²)

The SI unit of impulse is

If the kinetic energy of a body becomes four times, its momentum becomes