Which one of the following is not an example of inertia of rest? (i) When a train suddenly starts moving forward, the passenger standing in the compartment tends to fall backwards. (ii) When a hanging carpet is beaten with a stick, dust particles start falling out of it. (iii) On shaking the branches of a tree, the fruits fall down. (iv) When a passenger jumps out of a moving train, he falls down.

(iv) When a passenger jumps out of a moving train, he falls down.

Reason — When a passenger jumps out of a moving train, he falls down because inside the train, his whole body was in a state of motion. On jumping out of the moving train, as soon as his feet touches the ground, the lower part of the body comes to rest, while the upper part still remains in motion due to inertia of motion and not inertia of rest. Hence, the person falls down.