Question

The mass of an object with 500 J of kinetic energy moving with a velocity of 5 m/s is?

Answer 1

We can solve the problem using the formula shown below:
KE = 1/2 *m*v² where "m" is for the mass and "v" for the velocity

We are given with the following values:
m =?
KE = 500 J
V = 5 m/s

Mass = (KE*2)/V²
Mass = (500*2)/5² 
Mass = 40 meters

The answer is 40 meters.