Olympic-class sprinter starts a race with an acceleration

Chapter 25, Problem 20PE

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QUESTION:

Olympic-class sprinter starts a race with an acceleration of 4.50 m/s2 . (a) What is her speed 2.40 s later? (b) Sketch a graph of her position vs. time for this period.

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QUESTION:

Olympic-class sprinter starts a race with an acceleration of 4.50 m/s2 . (a) What is her speed 2.40 s later? (b) Sketch a graph of her position vs. time for this period.

ANSWER:

Step-by-step solution Step 1 of 5 (a) Apply the kinematics equation, Here v is the final velocity, u is the initial velocity, a is the acceleration and t is the time interval during which a body is under acceleration.

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