An observer on Earth observes two space- craft moving in the same direction toward the Earth. Spacecraft A appears to have a speed of 0.34 c, and spacecraft B appears to have a speed of 0.85 c. What is the speed of spacecraft A measured by an observer in spacecraft B? Answer in units of c.
An observer on Earth observes two space- craft moving in the same
direction toward the Earth. Spacecraft A appears to have a speed of 0.34 c, and spacecraft B appears to have a speed of 0.85 c. What is the speed of spacecraft A measured by an observer in spacecraft B? Answer in units of c.