Question

A 1 kilogram ball has 8joules of kinetic energy what is its speed

Answer 1

We know that KE=9J and the Mass (m) = 1kg. The formula to find this is going to be our Kinetic Energy Equation. K=
`(1)/(2)`m
`v^(2)`. But we will rearrange it to find the veloctiy so it looks like this: v=
`\sqrt{(2K)/(m) }`. Then just plug in the variables and solve.

Answer 2

The ball has a velocity of 4m/s.