A sprinter explodes out of the starting block with an acceleration of + 2.43 m/s2, which she sustains for 1.10 s. Then, her acceleration drops to zero for the rest of the race. What is her velocity at (a)t = 1.10 s and (b) at the end of the race?

Answer 1

velocity = acceleration * time

her acceleration is zero for the rest of the race, so her velocity stays constant