A uniform rod AB of length 1 m is placed at edge of a smooth table as shown in figure. It is hit horizontally at point B from left. If the magnitude of the displacement of the centre of mass in 1 s is 5 2 m, the angular speed of rod is :

(A) 30 rad/s (B) 20 rad/s (C) 10 rad/s (D) 5 rad/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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