(a)[2]
Find the driving force produced by the car’s engine at this instant.
(b)[2]
Find the power output of the car’s engine at this instant.
Mathematics 9709 · AS & A Level · Newton's laws of motion
Newton's laws of motion — practice question
A car with mass 900 kg is travelling along a straight horizontal road, and it experiences a constant resistive force of 350 N. At the moment when its speed is $15\text{ m s}^{-1}$, its acceleration is $0.25\text{ m s}^{-2}$.