Asked by Tony

In April 1974, Steve Prefontaine completed a 10 km race in a time of 27 min , 43.6 s . Suppose "Pre" was at the 7.15 km mark at a time of 25.0 min . If he accelerated for 60 s and then maintained his increased speed for the remainder of the race, calculate his acceleration over the 60 s interval. Assume his instantaneous speed at the 7.15 km mark was the same as his overall average speed up to that time.

I was unsure how to do this but I attempted it about 4 times. The answers I calculated are 0.00397, 5.1, 4.9, and 0.006.
Answered by bobpursley
Use this as a sample problem:
https://answers.yahoo.com/question/index?qid=20140117202925AA400ns
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