Two particles A & B are shot from the same height at t = 0 in opposite direction with horizontal velocities
3m/s and 4m/s respectively . If they are subjected to the same vertical acceleration due to gravity (9.8), the distance between them when
their velocity vectors become mutually perpendicular is
(a) 1.059 m (b) 1.412m (c) 2.474m (d) 9.8m

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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