A car of mass 2kg is at rest. What should be the magnitude of force which will make the body move with a speed of 30m/s at the end of 1s?

A body of mass 1kg is kept at rest. A constant force of 6N starts acting on it. Find the time taken by the body to move through a distance of 12m?

A constant force acts on an object of mass 5kg for a duration of 2s. It increases the object velocity from 3m/s to 7m/s. Find the magnitude of the force applied. Now if the force were applied for a duration of 5s, what would be the final velocity of the object?

A gun of mass 3 kg fires a bullet of mass 30 g. The bullet takes 0.003 seconds to move through the barrel of the gun and acquires a velocity of 100 m/s.

Calculate a) the velocity at which the gun recoils

b) the force exerted on the gunman due to the recoil of the gun.

N balls each of mass m impinge elastically in each second on a surface with velocity u. The average force experienced by the surface will be?