A ro rocket is fired vertically and since with a constant acceleration of 20 metre per second square for 1 minute its fuel is then all use and it continued as a free fall vary what is the maximum altitude reached what is the total time lapse from the take off until rocket strikes Earth

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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