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

A surface is hit elastically and normally by n balls per second, each of mass m moving with velocity u. if each ball is made to hit the same surface with velocity 2 u, the force on the surface would become K times. What is the value of K ?

A gun fires N bullets per second, each of mass m with velocity v. The force exerted by the bullets on the gun is :

A gun fires N bullets per second, each of mass m with velocity v. The force exerted by the bullets on the gun is :

A ball weighing 10g hits a hard surface vertically with a speed of 5m/s and rebounds with the same speed. The ball remains in contact with the surface for 0.01s. The average force exerted by the surface on the ball is

A ball weighing 10g hits a hard surface vertically with a speed of 5m/s and rebounds with the same speed. The ball remains in contact with the surface for 0.01s. The average force exerted by the surface on the ball is

A ball weighing 50g hits a hard surface normally with a speed of 25m/s and rebounds with the same speed. The ball remains in contact with the surface for 0.05s .The average force exerted by the surface on the ball is?

A gun fires N ' bullets per second,each of mass m with velocity v .The force exerted by the bullets on the gun is