A Martian leaves Mars in a spaceship that is heading to Venus. On the way, the spaceship passes earth with a speed v = 0.87c relative to it. Assume that the three planets do not move relative to each other during the trip. The distance between Mars and Venus is 1.20 × 1011 m, as measured by a person on earth.
(a) What does the Martian measure for the distance between Mars and Venus?
L = m
(b) What is the time of the trip (in seconds) as measured by the Martian?
?t0 = s