Question: The best sprinters can run a 100 m in 10.0 s. A 72.0 kg sprinter accelerates uniformly for the first 53.0 m to reach top speed, which he maintains for the remaining 47.0 m.
Part A: What is the average horizontal component of force exerted on his feet by the ground during acceleration?
Part B: What is the speed of the sprinter over the last 47.0 m of the race (i.e., his top speed)?
Rework your solution from the beginning and check each step carefully.