A machine gun fires 60.0 gram bullets at 6 bullets a second. If the velocity of the bullets is 600 m/s, then the average force on the machine gun is
A ball collides with a second ball at rest. After the collision, the first ball comes to rest and the second ball moves off at the speed of the first ball. In this collision
total momentum is not conserved.
total kinetic energy is not conserved.
total momentum is conserved but total kinetic energy is not conserved.
total momentum and total kinetic energy are conserved and the masses are equal