Physics question on kinetic energy?
Particle A of mass 500g is moving with a constant velocity of 12m s^-1 towards particle B of mass 1.5kg which is initially at rest. After collision, particle A comes to a rest and particle B moves with a new velocity of 4 m s^-1.
What is the loss in kinetic energy of the system?
How do I find the loss in the kinetic energy of the system, what does that mean?