Relativity and Cosmology


Time In Projectile Motion

Authors: Eric Su

In the projectile motion under vertical gravity, the horizontal speed remains constant while the vertical speed increases. The elapsed time to travel over a fixed length in the horizontal direction remains constant regardless of the vertical speed. Such elapsed time is independent of any reference frame in vertical motion. Therefore, the elapsed time is independent of the reference frame. Consequently, time is independent of the reference frame.

Comments: 2 Pages.

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Submission history

[v1] 2018-07-26 01:18:40

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