A large truck (m=3300kg) accelerates from 15 m/s. Neglecting any friction or air resistance, find the average mechanical power that the trucks engine must supply.

Answer 1

How fast is it accelerating? You don't say.

To get the power required, you need the kinetic energy at a later time, or the rate of acceleration.

Answer 2

My apologies, I should have double checked what I had typed. The truck accelerates from 15 m/s to 27 m/s in a time of 15 sec.