PLEASE HELP Make an account for Gizmo its free then fill it out
its called Sled Wars
THANKS SO MUCH

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity

The diagram shows a boulder rolling down a hill into a valley and then up the opposite hill. at which position does the boulder have the greatest kinetic energy? a b c d

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.