An astronaut traveling with a speed v = 0.90 c holds a meterstick in his hand. If he measures its length, he will obtain a value of
a. 1.0 m
b. 2.3 m
c. 0.19 m
d. 0.43 m
e. 0.81 m
Question 2
A starship navigator measures the distance between the Earth and the sun. If the ship is moving at a speed of 0.90 c, instead of obtaining 93 million miles, the navigator measures a distance (in millions of miles) of
a. 41.
b. 30.
c. 80.
d. 215.
e. 90.
