Inertia of motion :


A body in a state of notion, continues to be in the state of motion with the same  speed in the same direction in a straight line unless an external force is applied on it to change its state this property of body is called the inertia of motion.


EXPLAIN THE FOLLOWING:


1-When a passenger jumps out of a moving train, he falls down, why?


Ans-This is so because inside the train, his whole body was in a state of motion with the train . On jumping out of the moving train, as his feet touch the ground, the lower part of his body comes to rest, while the upper part still remains in motion due to inertsia of motion. As a result , he falls in the direction of motion of the train and gets hurt.

                To avoid falling , as the passenger’s feet touch the ground, he should start running on the ground in the direction of motion of the train for some distance.


Related question :


1-A cyclic riding along a level road does not come to rest immediately after he stops pedalling, why?


2-When a running car stops suddenly, the  passenger tends to lean forward, why?

3-An athlete often runs before taking a long jump, why ?


4-A ball thrown vertically upwards by a person in a moving train comes back to his hand, why ?


here is the link you can see the Answer-

https://knowledgecraker.blogspot.com/2020/06/what-is-inertia-and-their-types-related.html