a planet is moving in an elliptical path around the sun.P and Q are two points on a straight line in the elliptical path collinear with the sun.given SP=R1 and SQ=R2.v1 and v2 are velocities of the planet at P and Q respectively.find v1/v2

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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