A 1200 kg vehicle accelerates forwards at 1.5 m s−21.5\ \mathrm{m\,s^{-2}}1.5 ms−2. Resistive forces total 600 N. What is its forward driving force?
1800 N1800\ \mathrm{N}1800 N
3000 N3000\ \mathrm{N}3000 N
2400 N2400\ \mathrm{N}2400 N
1200 N1200\ \mathrm{N}1200 N