Test Preparation on Physics-Newton's Law and Motion 2

A stretching force of 1000 newton is applied at one end of a spring balance and an equal stretching force is applied at the other end at the same time. The reading of the balance will be:

A ball of mass 10 gm hits vertically a hard surface with a speed of 5 ms-1 and rebounds with the same speed. The ball remains in contact with the surface for 1/100 sec. The average force exerted by the surface on the ball is

A ball of mass 100 gm is moving with a velocity of 10 ms-1 and hits a bat and rebounds with a velocity of 10 ms-1. The force of the blow by the bat acts for 0.01 seconds. The average force exerted on the ball by the bat is

A body of mass m falls from a height of h1 and rises the height of h2. The magnitude of the change in momentum during the impact with the ground.