Question

In a 100 metre sprint, Usain Bolt typically reaches his top speed after the first 60
metres. What is his acceleration over the final 40 metres of the race (in m/s2), if he is
able to maintain a constant velocity until the finish line? Note: the time taken to run
the entire 100m race was 10.0 s and the time taken to run the final 40 metres was
3.27 s.
Express your answer to 2 decimal places (do not put units in your answer).

Answer 1

Answer:

So he runs 100 meter in 10 seconds. That's a over here. He's accelerating. And this is the maximum velocity. And then he keeps on maintaining maximum velocity. Now, this easy desist equals zero. This is G equals four. Second on this is T equals 12th that total distances 100 meter. So this was distances even by half a piece squared on velocity is given by four A. So that's the district travels over here and wikis four a times The in the field part This is a T Square. But pique was four. Thus for a Martha died. By that time 10 minus four second equals 100 meter. So eight a thus 24 a equals 100. So a equals 100 over 32 it was so egos 100 over 32. So the velocity at which he finishes that line V equals four A. It was four dives 100 over 32. Made it for a second. It was 100 over eight made up for second. It was 12.5 Peter for a second