HELP! In the middle of a quiz! And thank you! Two astronauts push off each other in space. The 80 kg astronaut ends up going 10 m/s. The other astronaut ends up going 8 m/s. Which answers correctly states the variables given. You must correctly choose all the givens to get full credit.

On a frictionless air track, a blue glider with mass 0.200 kg is moving to the right with a speed of 8.00 m/s. it strikes a red glider that has mass 0.600 kg and that is initially at rest. after the collision, the blue glider is moving to the left with a speed of 3.00 m/s.(a) what are the magnitude and direction of the velocity of the red glider after the collision? (b) is this collision elastic?