A car of mass 1200 kg accelerates uniformly from rest to a velocity of 20 m/s in 8 seconds. What is the net force acting on the car?

Acceleration is calculated as a = (v - u)/t = (20 - 0)/8 = 2.5 m/s². Applying Newton's second law, F = ma = 1200 × 2.5 = 3000 N. Option A results from dividing mass by time, and option C from multiplying mass by velocity.