Consider Sample Problem 7-3. The 6.5-kg fragment is observed at t = 1.42 s to be moving with a velocity whose horizontal component is 11.4 ml s in the same direction as that of the launch of the original projectile and whose vertical component is 4.6 m/s downward. Find the velocity of the 3.l-kg fragment at that time.

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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