A Ball is released from rest at a height of 10m on an inclined plane of inclination 53 degree. if the coefficient of restitution for collision is 3/4. then its total time of motion is approximately

(a) 3.5s

(b) 8.6s

(c) 12.8s

(d) 22s

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.

11

21

31

41