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The length of the spaceship of 120m was measured at rest relative to the spaceship so we will take that as the proper length, dennoted L_proper
We first calculate the Lorentz factor:
Ɣ...

This question is simply a matter of finding and applying the correct equation of motion.

First, draw a diagram - even if the situation in the questions seems really simple, it's always us...

From newton's first law, an object remains in its inertial frame until a force acts upon it. This means that according to a stationary observer, the object will remain at rest or continue moving at the...

v = f x lambdatherefore lamba = v/ff=1/Tf = 1/0.2 = 5Hzlambda = 20/5 = 4m

First, clearly set out the information we know: U=0m/s, V=15m/s, T=10s, and identify the value we are wanting to find out: A=? Check that all of these value's units are in meters and seconds only. Recall ...