A typical sprinter speeds up during the first third of a race and slows gradually over the?

A typical sprinter speeds up during the first third of a race and slows gradually over the


rest of the course. Is it accurate to say that a sprinter is accelerating as he slows during the


final two-thirds of the race?|||Yes, for instance, the fastest human is clocked at about 9 m/s. He goes from 0 m/s to 9 m/s, which is obviously an acceleration, because acceleration is defined as a change in velocity over time. Let's say that he accelerates to 9 m/s, then it takes him 5 seconds to slow to a stop. That would be:





acceleration = [Vf - Vi] / t





a = [ (0.0 m/s) - (9 m/s) ] / (5 s)


a = -1.8 m/s^2





With the negative sign indicating that the vector of acceleration is slowing down.|||Yes the sprinter is accelerating in the opposite direction he's running in.|||a sprinter accelerates to his maximum speed and keeps at that speed through the tape there is no slowing down