Question
A 30,000-kg freight car is coasting at 0.850 m/s with negligible friction under a hopper that dumps 110,000 kg of scrap metal into it. (a) What is the final velocity of the loaded freight car? (b) How much kinetic energy is lost?
1. $0.18 \textrm{ m/s}$
2. $8500 \textrm{ J}$ of kinetic energy was lost.
Solution Video