Question

A 10-kilogram bicycle is traveling at a speed of 2m/s. what is the bike's kinetice energy?

Answer 1

The kinetic energy of an object of mass m moving with speed v is given by:
$K= \frac{1}{2}mv^2$
For the bicycle in our problem, $m=10 kg$ and $v=2 m/s$, so the kinetic energy is
$K= \frac{1}{2}(10 kg)(2 m/s)^2=20 J$