A sprinter runs 100.0 m in 9.87 seconds. If he travels at constant acceleration for the first 75.0 m and then at constant velocity for the final 25.0 m, what was his peak velocity?
A. 17.7 m/s.
B. 15.4 m/s.
C. 20.3 m/s.
D. 17.5 m/s.
A. 17.7 m/s.
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