Answer to Question #86149 in Mechanics | Relativity for Khalid Mohammed

Question

A ball of mass 350g is kicked with a speed of 70 m/s. What is kinetic energy?

Answer 1

The kinetic energy by definition

$$K=\frac{mv^2}{2}$$

$$K=\frac{0.350\:\rm{kg}\times (70\:\rm{m/s})^2}{2}=857.5\:\rm{J}$$