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