Question- The displacement of a particle at any instant is given by x= 8t² – 3t³. Calculate the average velocity in the interval from t=0 to t=2s and in the time interval from t=0 to t=3s,if x is measured in m. A boy runs along a straight path for the first half distance with a velocity v and the second half distance with velocity v . Find the average velocity of the boy.

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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