Answer:
rpm
Explanation:
Given that rotational kinetic energy = 
Mass of the fly wheel (m) = 19.7 kg
Radius of the fly wheel (r) = 0.351 m
Moment of inertia (I) = 
Rotational K.E is illustrated as 





Since 1 rpm = 



The relationship between a car and energy is that the car uses gas to produce speed within energy needs to be powered
V=IR, therefore when resistance is constant the voltage and current are directly proportional