a motorbike has a mass of 300kg, and is being ridden along a straight road. The rider sees a traffic queue ahead. He applies the brakes and reduces the speed of the motorbike from 18m/s to 3 m/s. Use this equation to calculate the kinetic energy lost by the motorbike.

Question

Kinetic energy= 1over 2x mass x speed2.

Answer 1

You have the formula,
K.E. = (m/2) V^2
Calculate it for V = 18 and for V = 3
and take the difference.

You could use the practice