The head of a golf club moving at 45.0 m/s strikes a golf ball (mass = 46.0 g) resting on a tee. The effective mass of the clubhead is 220 g. (a) With what speed does the ball leave the tee? (b) With what speed would it leave the tee if you doubled the mass of the clubhead? If you tripled it? What conclusions can you draw about the use of heavy clubs? Assume that the collisions are perfectly elastic and that the golfer can bring the heavier clubs up to the same speed at impact. See Question 13.

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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