A 2,000 kg car moving at 10 m/s collides head-on with a 2,500 kg car moving in the opposite direction at 15 m/s. The two cars are locked together after impact.

Question

Is this an elastic or an inelastic collision? Why?
What is the speed of the cars after impact?
Calculate the kinetic energies of the cars, both before and after impact.
What fraction of the kinetic energy was lost during the impact? Where did the energy go?

Answer 1

idk