Question

A sprinter explodes out of the starting block with an acceleration of +2.3 m/s^2, which she sustains for 1.2 s. Then, her acceleration drops to zero for the rest of the race. What is her velocity (a) at t=1.2 s ans (b) at the end of the race?

Answer 1

a. V = 2.3m/s^2 * 1.2s = 2.76m/s.

b. Since the acceleration dropped to
0 at 1.2 sec, the velocity remained
constant at 2.76m/s.

Answer 2

thankyou soo much!!!

Answer 3

12