The 2007 world record for the men\'s 100-m dash was 9.77 s. The third-place runn

Question

The 2007 world record for the men's 100-m dash was 9.77 s. The third-place runner crossed the finish line in 10.07 s. When the winner crossed the finish line, how far was the third-place runner behind him?
(a) Compute an answer that assumes that each runner ran at his average speed for the entire race.

The answer for this is 2.98 m , need help with part B



(b) Compute another answer that assumes that a world-class sprinter runs at a speed of 12 m/s after an initial acceleration phase. If both runners in this race reach this speed, how far behind is the third-place runner when the winner finishes?

Explanation / Answer

a) 100/10.07=9.93 m/s 9.93*9.77=97.01 100-97.02=2.98 m behind he was

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