The energy contained in moving objects is referred to as kinetic energy. No kinetic energy exists in stationary particles.

Formula: KE = \frac{1}{2}mv^2   

If either of the two numerics are given, the kinetic energy formula is used to calculate the mass, velocity, or kinetic energy of the body.

Step 1: Calculating the mass of the object

Given that

m = 10 g = 0.01 kg Speed of the object v=67\ m/s

Kinetic energy, KE=500\ joules\

KE = \frac{1}{2} mv^2

m = \frac{2KE}{v^2}

Substitute the known values in the above equation

m = \frac{2*500 \text{ joules }}{(67\text{m/s})^2}

m = \frac{1000 \text{ joules }}{4489 m^2/s^2}

m = 0.223 kg

Hence, mass of the object, m = 0.223 kg