The kinetic energy K, in joules, of an object is given by K=1/2mv^2, where m is the mass, in kg, of the object and V is the velocity in m/s. If a 150kg object accelerates at 4.5m/s^2, how fast is the kinetic energy changing when its velocity is 20.0m/s? The answer is increasing at 13500j/s. May I know the full working for this question? Thanks!!!