A runner is training for an upcoming race. In order to track the pace of the run

Question

A runner is training for an upcoming race. In order to track the pace of the run, the runner is able to record time splits for the entire period. This allows the runner to produce the given velocity versus time graph. The run is Assume the run is in a straight line. Answer the questions concerning this graph. 5.00 4.75 4.25 4.00 3.75 3.50- 3.25 3.00 2.75- 2.50 2.25 2.00 3 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 Time (s) The average acceleration of the runner during segment 1 is zero. O flat O positive. negative.

Explanation / Answer

Here ,

as the final velocity is greater than initial velocity

the average acceleration is positive

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for a2

a2 = change in velocity/time taken

a2 = (3.75 - 3)/(35 - 10)

a2 = 0.03 m/s^2

the acceleration a2 is  0.03 m/s^2

for a6

a6 = change in velocity/time taken

a6 = (3.25 - 3)/(110 - 90)

a6 = 0.0125 m/s^2

the acceleration a6 is 0.0125 m/s^2

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