A Runner Circles a Track of Radius 100 M in 100

question 45

Multiple Choice

A runner circles a track of radius 100 m in 100 s moving at a constant rate. If the runner was initially moving east, what has been the runner's average acceleration when halfway around the track?

• A) At a constant rate, the average acceleration would be zero.
• B) 0.13 m/s², south
• C) 0.25 m/s², west
• D) No answer is correct.

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