Use \(g=10\text{ m s}^{-2}\).

A car of mass 900 kg moves along a straight horizontal road against a constant resistance of 350 N. At an instant when its speed is \(15\text{ m s}^{-1}\), its acceleration is \(0.25\text{ m s}^{-2}\).

(a) Find the driving force of the engine at this instant. [2]

(b) Find the power of the engine at this instant. [2]