Two football players collide with a total momentum of 520 kg* m/s before the collision. After the collision, Player X has a momentum of 270 kg * m/s What is the momentum for Player Y after the collision? What is their total momentum after the collision? Make sure to show all your work and include proper units.

Engines for propeller-driven aircraft are limited in their maximum rotational speed by the fact that the tip speed of the propeller must not approach the speed of sound in air (mach i). taking 6 ft as a typical diameter for a propeller of a light airplane and 1100 fils as the speed of sound, find the upper limit on the rpm (revolutions per minute) of the propeller shaft.