Question Detail
Question
A car of mass 500kg is accelerating at 1.5m/s². If the resistance to motion is 500N, what is the force due to the engine?
Correct Answer
Option C is the correct answer.
Detailed Explanation
Net force F_net = ma = 500 × 1.5 = 750 N. This net force is the engine force minus the resistance: F_engine - F_resistance = F_net. So, F_engine = F_net + F_resistance = 750 + 500 = 1250 N.
Hint
The net force causes acceleration. It is the vector sum of the engine force and the resistance.