A sprinter explodes out of the starting block with an acceleration of +2.38 m/s2, which she sustains for 1.20 s. Then, her acceleration drops to zero for the rest of the race. What is her velocity at (a)t = 1.20 s and (b) at the end of the race? (a) Number i (b) Number i a Units Units Acceleration drops to zero End of race

College Physics
10th Edition
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter2: Motion In One Dimension
Section: Chapter Questions
Problem 4CQ: (a) Can the equations in Table 2.4 be used in a situation where the acceleration varies with time?...
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A sprinter explodes out of the starting block with an acceleration of +2.38 m/s², which she sustains for 1.20 s. Then, her acceleration
drops to zero for the rest of the race. What is her velocity at (a)t = 1.20 s and (b) at the end of the race?
K
(a) Number
(b) Number
i
Units
Units
Acceleration
drops to zero
<
End of
race
Transcribed Image Text:A sprinter explodes out of the starting block with an acceleration of +2.38 m/s², which she sustains for 1.20 s. Then, her acceleration drops to zero for the rest of the race. What is her velocity at (a)t = 1.20 s and (b) at the end of the race? K (a) Number (b) Number i Units Units Acceleration drops to zero < End of race
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