three identical blocks A , B and C are placed on horizontal frictionless surface. THE blocks B and C are at rest block A is approaching towards B with speed of 10m/s .If the coefficient of restitution for all collisions is 0.5 then the speed of the block C just after collision is approximately

(1) 5.6m/s (b) 6.4 m/s © 3.2 m/s (4) 4.6m/s

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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