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Homework Statement
A baseball player at home plate hits a pop fly straight up (the beginning event) that is caught by the catcher at home plate (the ending event). Which one or more of the following obeservers record(s) the proper time interval between the two events? (a) A spectator sitting in the strands (b) A spectator watching the game home on TV (c) The third baseman running to cover the play
Homework Equations
[tex]\Delta t=\frac{\Delta t_{0}}{\sqrt{1-\frac{v^2}{c^2}}}[/tex]
The Attempt at a Solution
As I understood time dilution it occurs when an object is moving and the obeserver is not inertial with the movement of the object. In this case neither of the observers is moving with the object (the baseball) so no one of the observers should be able to records the proper time interval between the two events. Only a clock that was a attached to the baseball itself would do that. Please explain why this view is not correct.