# Package on a Hill#

A rocket racer toy, $$m = {{ params.m }} kg$$ is sent down a track from $$A$$ to $$B$$ separated by a height $$h = {{ params.h }} m$$ and a distance $$d = {{ params.d }} m$$ as shown. If the racer has a velocity of $${{ params.va }} m/s$$ down the incline at $$A$$ and a velocity of $${{ params.vb }} m/s$$ away from the incline at $$B$$, what is the work done by friction from A to B?

## Part 1#

Please enter in a numeric value in $$J$$.