1. An object experiences a net zero external unbalanced force. Is it possible for the object to be travelling with a non-zero velocity?

Why do you fall in the forward direction when a moving bus brakes to a stop and fall backwards when it accelerates from rest?

Explain why some of the leaves may get detached from a tree if we vigorously shake its branch.

In the following example, try to identify the number of times the velocity of the ball changes: “A football player kicks a football to another player of his team who kicks the football towards the goal. The goalkeeper of the opposite team collects the football and kicks it towards a player of his own team”. Also identify the agent supplying the force in each case.

Which of the following has more inertia: (A)a rubber ball and a stone of the same size? (B)a bicycle and a train? (C)a five rupees coin and a one-rupee coin?