Question 1- A 9,700-kg truck runs into the rear of a 1,000-kg car that was stationary. The truck and car are locked together after the collision and move with speed 8 m/s. Compute how much kinetic energy was "lost" in this inelastic collision.
Question 2- A 52 kg boy on roller skates moves with a speed of 4 m/s. He runs into a 43 kg girl on skates. Assuming they cling together after the collision, compute how much kinetic energy (in J) was "lost" in this inelastic collision. (Enter the magnitude. Assume the girl is initially at rest.)
