A car of mass 1.8 × 103 kg tows a caravan of mass 1.2 × 103 kg along a horizontal road. The total resistive force on the caravan is 800 N. The acceleration of the car and caravan is 1.8 m s-2.
What is the tension in the towbar?
1400 N1400\text{ N}1400 N
2200 N2200\text{ N}2200 N
3000 N3000\text{ N}3000 N
6200 N6200\text{ N}6200 N
