Inside a lift accelerating upwards at 2m/s^2 a loose bolt falls from the ceiling. If height of lift is 2m. Find the speed of bolt with which it hits the floor. Initial speed of lift is 5m/s in upward direction.In this question i found the answer as velocity of bolt wrt lift as 4(1/3)^1/2 m/s.My doubt is what will be the velocity of bolt wrt ground ? The acceleration of bolt wrt ground and why ......plz explain

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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