Thanks so much for that! I wasn't actually taught that and my teacher says that is the only way.
It seems so much easier (and it, plus it's right!) Going to be a fun lesson tomorrow
Thanks for the replies. I've tried to understand them as best I can however we have not been taught an awful lot on integration. From ehlid's reply I managed to get the following:
900 = {125}\int_0^T{dt}
That's as far as I could get. Do you know of any places where I can find the pure maths...
The question is about Mechanics (so a mix of maths and physics)
Homework Statement
A car of mass 900kg moves along a straight horizontal road with its engine working at a constant rate of 20kW. Its speed at A is 10m/s, Assuming that there is no resistance to motion, calculate the time taken...