Answer to Question #115586 in Mechanics | Relativity for Maisie Bell

Question

Calculate the kinetic energy of an object of mass 500g that is moving with a velocity of 20m/s

Answer 1

The kinetic energy

$$KE=\frac{mv^2}{2}=\frac{0.5\:\rm kg\times (20\: m/s)^2}{2}=100\:\rm J$$