Question Detail
Question
An airplane accelerates down a runway at 3.20 m/s² for 32.8 s until it finally lifts off the ground. Determine the distance travelled before take-off.
Correct Answer
Option A is the correct answer.
Detailed Explanation
s = ½at² = ½ × 3.20 × (32.8)² = 1.6 × 1075.84 = 1721.34 m = 1.72 km ≈ 1.7 km.
Hint
s = ½at² from rest.