posted by Robyn .
Heyy is anybdy good at physics I am stuck on this question ...
... A camper van with a mass of 2500 kg has a maximum driving force of 2650 N.
The camper van drives along a straight road at a constant speed of 90 kilomatres per hour. At this speed, air resistance is 2000 N and the friction between the tyres and the road is 500 N.
What is the engine exerting?
PLease help !!!