# A cat has a mass of 3 kg and runs at a speed of 6 m/s. How much kinetic energy does the cat have?

Mar 11, 2017

$54 J$

#### Explanation:

Kinetic energy is calculated by the equation

$K E = \frac{1}{2} m {v}^{2}$

$m = \text{mass}$

$v = \text{ velocity}$

in this case we have

$K E = \frac{1}{2} \times 3 \times {6}^{2}$

$K E = \frac{1}{2} \times 3 \times 36 = 54 J$