A horse pulls a cart with a force of 42.0 lb at an angle of 27.0° with the horizontal and moves along at a speed of6.20 mi/h. (a) How much work does the horse do in 12.0 min? (b) Find the power output of the horse, in hp of course.

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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