A car accelerates uniformly from rest to 24 m/s over a distance of 72 m. What is the magnitude of its acceleration?
A0.33 m/s²
B4.0 m/s²
C8.0 m/s²
D288 m/s²
Explanation
📌 Use v_f² − v_i² = 2aΔx. 24² − 0 = 2a(72) → 576 = 144a → a = 4.0 m/s². Distractor A used wrong formula; C forgot factor of 2 in denominator; D stopped at 576/2 without dividing by Δx.