Help and Fast please!!! A car is designed to get its energy from a rotating flywheel whth a radius of 2 m and a mass of 500 kg. Before a trip, the flywheel is attached to an electric motor, which brings the flywheel's rotational speed up to 5000 rev/min. (a) Find the kinetic enrgy stored in the flywheel. (b) If the flywheel is to supply energy to the car as would a 10 hp motor, find the length of time the car could run before the flywheel would have to be brought back up to speed. 1 hp = 746 Watts Can somebody walk my through this process....i already know I have to convert 5000 rev/min to radians/sec but i don't even know how to do that!!! please i really need this!