I have no idea where to begin there is so much information, just way over my head. Can anyone help? Two astronauts, floating in space at rest with respect to their ship, are initially 6.0 m apart. They decide to play catch with a 0.490 kg asteroid. Paul, whose mass is 101.0 kg, heaves the asteroid at 18.4 m/s toward Heather, whose mass is 63.0 kg. She catches it and heaves it back 2.5 s later at 18.4 m/s (with respect to the ship) toward Paul. Just before Paul catches it a second time, how far apart are the astronauts?