A 2.0-kg ball is dropped from a height of 5.0 m. The ball falls, hits the ground, and bounces back up to a height of 3.0 m. What can be said about ∆E_int, ball between the initial and final state of the ball?

(A) ∆E_int, ball > 39.2J

(B) ∆E_int, ball = 39.2J

(C) ∆E_int, ball

Three identical balls are placed on a frictionless horizontal surface touching each other. They stick to each other because of adhesive. Another ball of same radius and mass m is placed over the void created by the three balls. Find the forces applied by the balls kept on the floor to each other if the system remains in equilibrium.

A car loaded with water having total mass 1000 kg moves on a straight horizontal Road starting from rest under the action of a force of 100 Newton. The water spills throw a small hole in the bottom at a rate of 0.1 KG per second the velocity of cart after 300 seconds is nearly.

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