- #1
Quarlep
- 257
- 4
I am confused about Relative Motion.Lets suppose we have one train and two observer.One of them inside the train and the other one is outside.Lets think the outside observer see the train moves a constant velocity v.The observer in the train will be think it is not moving cause of Galileo Principle(It means you cannot prove your are moving or not moving).The outside observer will think kinetic energy will be 1/2mv^2 but the inside observer can't say anything(or will say zero cause he will think its not moving).Now let's think a special situation which two observer can agree the speed.(I know its not possible but let's think that's possible).In this case Can two observers agree on kinetic energy of train(In this case again its violets galileo principle cause the observer in the train know its moving but he can't proof)here I am started to confused.What can be solution Can they agree on kinetic energy cause of the observer inside the train no proof of movement ?