Author Question: A meterstick moving in a direction parallel to its length appears to be only 60.0 cm long to an ... (Read 41 times)

CharlieWard · **on:** Jul 28, 2018

A meterstick moving in a direction parallel to its length appears to be only 60.0 cm long to an observer. What is the meterstick's speed relative to the observer? (c = 3.00 108 m/s)
a. 1.19 108 m/s
c. 2.93 108 m/s
b. 2.40 108 m/s
d. 2.75 108 m/s

Question 2

How fast would a rocket have to move past a ground observer if the latter were to observe a 3.0 length shrinkage in the rocket length? (c = 3.00 108 m/s)
a. 1.2 108 m/s
c. 0.73 108 m/s
b. 0.60 108 m/s
d. 0.12 108 m/s