Asked by mvlew

The best sprinters can run a 100 m in 10.0 s. A 77.2 kg sprinter accelerates uniformly for the first 51.0 m to reach top speed, which he maintains for the remaining 49.0 m. What is the average horizontal component of force exerted on his feet by the ground during acceleration? What is the speed of the sprinter over the last 49.0 m of the race (i.e., his top speed)?

honestly, I don't even have an idea how to set up this problem.
Answered by Anonymous
hgj
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