Question

A 225 kg motorcycle has 6.8*10 3j of kinetic energy. how fast is it going?

Answer 1

7.35m/s

Step-by-step explanation:

Kinetic energy = 1/2 MV^2

From the question

Kinetic energy = 6.8x10^3J

Mass = 225kg

V =?

Using the above formula

We have

6.8x10^3 = 1/2 x 225 x v^2

6.8x10^3 = 112.5 x v^2

Divide both sides by 112.5

We have

6.8x10^3 / 112.5 = v^2

v ^2 = 54.04

V = squared root of 54.04

v = 7.35m/s