A car (1200kg) going 15m/s [E60°S] collides with another car (1000kg) going at 6.0m/s [W]. What is the final velocity of the cars if they stick together?

A car of 1200 kg travels east at 24 m/s while a truck of 2200 kg travels north at 19 m/s They collide and stick together. a) What is the momentum in the system? b) What is the final velocity (magnitude and direction) after the collision?

A body of mass m sliding along a frictionless surface collides with another body of mass m, which is stationary before impact. The two bodies stick together. If the kinetic energy of the two-body system is E , what is the initial velocity of the first mass before impact? 

If two gliders of equal mass and equal and opposite initial velocity (u) collide perfectly elastically, using

1. What is the final velocities of the gliders in terms of the initial velocities?

2. If the two gliders of equal mass and equal and opposite initial velocity collide and stick together, what are the final velocities of the gliders?