Question Detail
Question
A car starts from rest with constant acceleration covering 1200 m in 40 s. Calculate its velocity at this time.
Correct Answer
Option D is the correct answer.
Detailed Explanation
From rest, s = ½at² => 1200 = ½a(1600) => 1200 = 800a => a = 1.5 m/s². Then v = at = 1.5 × 40 = 60 m/s.
Hint
Use kinematic equations for constant acceleration starting from rest.