Question

A bowling ball is moving down a bowling lane at 4 m/s. if the mass of the bowling ball is 7 kg, find its kinetic energy.

Answer 1

Remember the equation for kinetic energy?

$kinetic = \frac{1}{2} m {v}^{2}$

From the question, we know that:
Mass, m = 7kg
Velocity, v = 4 m/s

All you need to do is plug those values into the equation and you'll get its kinetic energy in units of Joules (J). Tadaa!

$kinetic = \frac{1}{2} (7) {(4)}^{2}$