You hold glider a of mass 0.125 kg and glider b of mass 0.375 kg at rest on an air track with a compressed spring of negligible mass between them. when you release the gliders, the spring pushes them apart. once the gliders are no longer in contact with the spring, glider a is moving to the right at 0.600 m/s. what is the velocity (magnitude and direction) of glider b at this time?
glider a moving to the right at 0.600 m/s then collides head-on with a third glider c of mass 0.750 kg that is moving to the left at 0.400 m/s. after this collision, glider c is moving to the left at 0.150 m/s. what is the velocity (magnitude and direction) of glider a after this collision?