A bus begins to move with an acceleration of 1m/s². A boy who wants to board it can run at 8 m/s². If the boy just caches the bus, how far was the boy behind the bus when the bus began to move?

1)18 m

2)36 m

3)32 m

4)48 m

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