Question

In April 1974, Steve Prefontaine completed a 10.0 km10.0 km race in a time of 27 min27 min, 43.6 s43.6 s. Suppose "Pre" was at the 7.99 km7.99 km mark at a time of 25.0 min25.0 min. If he accelerated for 60 s60 s and then maintained his increased speed for the remainder of the race, calculate his acceleration over the 60 s60 s interval. Assume his instantaneous speed at the 7.99 km7.99 km mark was the same as his overall average speed up to that time.

Answer 1