Question

If an object moving at 12 m/s has a kinetic energy of 72 j what is the mass

Answer 1

Simply, apply the formula
`E = (1)/(2)mv^(2)` and insert the values of m = mass, v = velocity and E = Energy.
The result will be
`72J = (1)/(2)m(12m/s)^(2)`, m = 1 kg