- #1

- 16

- 0

## Homework Statement

Find the force to stop a 5kg ball at 20m/s instantly. Dont take in account resistance.

## Homework Equations

kinetic energy = 0.5*mass*velocity^2

Energy = force * distance

force = energy / distance

## The Attempt at a Solution

0.5 * 5kg * 20m/s^2 = 1000J

1000J / 0 = ??????

As seen it does not work if you want to find the force to counter it exactly...

What am I doing wrong?

Thanks