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irphysics
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What will happen if a man jumps inside a train.Will the train move forward and the man land up in different place.Sorry for my bad English.
irphysics said:What will happen if a man jumps inside a train.Will the train move forward and the man land up in different place.Sorry for my bad English.
Pythagorean said:However long it takes for the man to jump, from the ground onto the train, the train will have moved x = vt (where t is that time and v is the velocity of the train). So yeah, the spot will have moved, and it will have moved a lot if the train is going very fast.
Furthermore, since the train has a lateral velocity and the man does not (i.e. the man does not have any velocity in the direction of the train's velocity), when the man's feet land on the train, they will be pulled with the motion of the train and he may fall over if he doesn't shift his center of gravity appropriately.
Of course, if you're riding along side the train in a horse and keeping up with it perfectly, then you'll have velocity in the direction of the train, so when you jump it will be as if you jumped from one stationary object to another (ignoring wind and air resistance).
Pythagorean said:However long it takes for the man to jump, from the ground onto the train...
S_Happens said:I'm pretty certain the OP is talking about a person that is already riding in the train simply jumping straight up inside the train.
Not that your examples don't clearly illustrate the principles and answer the question. I wonder if the OP can figure out an answer from what you've already posted.
pallidin said:Yeah, it's a good thing that with constant, linear speed you will fall to the same spot, else imagine the chaos if I jumped or threw something up into the air while inside a passenger jet going a smooth 600mph!
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