(Solved): Out in a space station a spaceship's mass and length are measured and you synchronize your clock wi ...

Out in a space station a spaceship's mass and length are measured and you synchronize your clock with their clock. Then the spaceship begins to travel away from you at 0.8 c while you stay on the space station.Now you send a second ship to catch the first one. It moves at 0.95 c away from you. At what speed does the spaceship measure it approaching? (a) 0.234 c (b) 0.478 c (c) 0.625 c (d) 0.782 c (e) 0.881 c