Question Detail

PHY 101 PHY 101 Past Questions Objective Question

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.
Options
A 1.7 km
Correct Answer
B 6.9 km
C 2.8 km
D 1.5 km
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.

Question Info