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 following velocity versus time graph given below. The run is broken into six segments. Answer the questions below concerning this graph. The average acceleration of the runner during segment 1 is: Negative flat zero positive (Scroll down for more questions.) Calculate the average acceleration (magnitude and direction) of the runner during segment 2 and 5. bar{a2}= m/s^2 bar{a5}=m/s^2

Explanation / Answer

Average acceleration = Change in velocity / Change in time

a4 = (4.25 - 3.50) / (75 - 60) = 0.05 m/s2 in the positive direction

a6 = (3.5 - 3.25) / (110 - 90) = 0.0125 m/s2 in the positive direction

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