Because of time dilation, you observe the hands of your friend’s watch to be moving slowly. How does your friend view your watch—as running slowly, running rapidly, or neither?

Solution 26E Introduction: In relativistic speed, the time elapsed between two events is appeared to be “stretched” or “dilated”. This phenomenon is known as “time dilation” in relativity. Length contraction is another phenomenon in relativistic speeds. T 0 The mathematical expression for time dilation is, T = v 1 c Where, T - Dilated time between two events T0 Actual time between two events v - relative speed of the reference frames c - Speed of light Step 1: Due to the time dilation effect, you observed your friend’s watch is moving slowly. In fact, the hands of the watch are moving as slow when both of you are moving with relativistic...