A particle of mass M is equal to 3 kilogram is projected at angle of 45 degree with the horizontal with a speed of 20 root 2 metre per second. The angular momentum of the particle at the highest point of trajectory about the horizontal Axis passing through the origin and perpendicular to the plane of motion is

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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