Author Question: If we could observe a spacecraft actually traveling past us at the speed of light, we would measure ... (Read 29 times)

cdr_15 · **on:** Jul 27, 2018

If we could observe a spacecraft actually traveling past us at the speed of light, we would measure its mass to be

A) zero
B) slightly greater
C) infinite
D) the same as at rest

Question 2

A spaceship carrying a light clock moves at a speed of 0.96 c relative to an observer on Earth. Relative to a frame of reference that is fixed with respect to the earth, how long does it take the clock to advance 1 s?

A) 5.83 s
B) 3.57 s
C) 0.96 s
D) 1.22 s
E) 2.59 s