Question

A marathon runner starts from rest and accelerates at a rate of 2 m/s². He finished his race in 30 min. What was the initial velocity of the runner?

Answer 1

The initial velocity of a marathon runner who starts from rest is 0 m/s, regardless of the acceleration or the time taken to finish the race.

Step-by-step explanation:

The initial velocity of the marathon runner who starts from rest and accelerates at a rate of 2 m/s² is 0 m/s. Since the runner starts from rest, by definition, the starting speed is zero. The question of the runner's final velocity or distance covered during the 30-minute race could be computed using kinematic equations, but the initial velocity will always be 0 m/s if the runner starts from rest.