Two manned satellites approach one another at a relative speed
of 0.300 m/s, intending to dock. The first has a mass of 2.00 ✕
103 kg, and the second a mass of 7.50 ✕ 103
kg. If the two satellites collide elastically rather than dock,
what is their final relative velocity in meters per second? (Adopt
the reference frame in which the second satellite is initially at
rest and assume that the positive direction is directed from the
second satellite...