A car of mass 1,200 kg accelerates from rest to 20 m/s in 8 seconds. What is the net force on the car during this acceleration?
A150 N
B3,000 N
C24,000 N
D2.5 N
Explanation
📌 a = (20 − 0)/8 = 2.5 m/s². F = ma = 1200 × 2.5 = 3,000 N. Distractor A divided m by a; C used final velocity as acceleration (20 × 1200 = 24,000); D reported just the acceleration value without multiplying by mass — a very common CBE trap.