Why is it when u jump at location A in the train , u end at location A even though the train is moving?

Answer 1

As you know, a body in motion stays in motion. When you are in a train your body is actually moving at the exact same speed as the train. Therefore when you jump, your body doesn't just halt to a standstill in mid air. It continues to travel at whatever speed you were going at prior to jumping but minus just a little speed due to the friction your body has with the surrounding air particles. Because you are only airborne for a very short period of time, the minus in speed is negligable.

Answer 2

The same reason when you hold a ball in your hand out the window of a moving car and drop it does not hit the spot on the ground directly under where you released it: momentum. To you, it may appear you jumped straight up and came straight down, but to an observer outside the train, your jump would look like a parabolic arc or up and over motion, not up and down motion. You are not at rest when you jump. You are in motion along with the train and stay that way while you jump. Now, if right after you jumped, the train slammed on the brakes, you wouldn't land in the same spot.

Answer 3

If you mean why when you jump straight up in a moving train you land in the same spot. Its because you are moving with the train.

Answer 4

Because your body has the same motion as the train does, so when you jump you also move forward and so will land in much the same spot.

Answer 5

The instant you jump from the train, you are no longer part of it . Then the earth's gravity makes sure that you land at A (assuming there is no wind effect).

Answer 6

You are at rest with respect to the train and your horizontal component is equal to the train's.