Andrea wants to go to a restaurant during her lunch break between lectures. She

Question

Andrea wants to go to a restaurant during her lunch break between lectures. She has one hour according to

the clock on her classroom on Earth. It usually takes her 30min to get served and eat at most restaurants,

and all restaurants that she can visit are at rest relative to Earth.

(a) Traveling at a speed of 0.75 c with respect to Earth, Andrea makes it to The Restaurant at the Edge

of the Universe with time to eat and come back to Earth. How far is the restaurant relative to Earth?

(b) According to Andrea’s watch, how long did she take in total for her lunch break?

Explanation / Answer

a) 2d= .75cx30/60

d= .75c/4= distance of restaurant

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