When work is done against frictional forces acting on an object ... a rugby team pushes the other team backwards 5 m using a force of 1000 N. Calculate the work done moving the other team.

Travelling between stops, the average frictional force on a bus was \(8\cdot2\times10^{3}N\) over a distance of 500\(m\). Calculate the work done by the bus engine to overcome this frictional force.