A friend in a spaceship travels past you at a high speed. Hetells you that his ship is 21 m longand that the identical ship you are sitting in is 15 m long.
(a) According to your observations, how long is your ship?
m
(b) According to your observations, how long is his ship?
m
(c) According to your observations, what is the speed of yourfriend's ship?
c