# A girl who weighs 30 kg is inline skating at a speed of 5 m/s. What is the girl's kinetic energy?

##### 1 Answer

May 23, 2016

Kinetic energy of girl is

#### Explanation:

We can find kinetic energy of anybody/particle by plugging its mass and velocity in Kinetic energy equation

#K=1/2mv^2#

Where,

For this case mass of girl is

Her velocity is

According to equation

#K=1/2mv^2#

#K=1/2*30*(5)^2#

#K=1/2*30*25#

#K=375 J#

Kinetic energy of girl is