Kinetic energy can be calculated with the following formula:

Return the Kinetic Energy in Joules, given the mass and velocity. For the purposes of this challenge, round answers to the nearest integer.
kineticEnergy(60, 3) ➞ 270
kineticEnergy(45, 10) ➞ 2250
kineticEnergy(63.5, 7.35) ➞ 1715
Expect only positive numbers for inputs.