A sprinter who weighs 639 N runs the first 8.6 m of a race in 1.9 s, starting from rest and accelerating uniformly. What are the sprinter's (a)speed and (b) kinetic energy at the end of the 1.9 s? (c) What average power does the sprinter generate during the 1.9 s interval?

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A: Work energy theorem  It states that work done is equal to the change in kinetic energy.  W= ∆K.E

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A: The correct option is (a).  i.e   ~  7.2m

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A: solution as

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A: Solution

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