A car of mass “M” is resting on a frictionless surface. Two men of mass m1 and m2 are standing on the car. m1 who is standing on the left edge jumps first with a velocity “v” and just after he jumps m2 who is standing on the right edge jumps with the same velocity “v”. Find the final velocity of the car v’.

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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