A man hikes up a mountain to the peak, where he rests for a few minutes and then continues down the other side of the mountain. We measure his location as distance up from the base of the mountain. What can be said about the man's velocity when he is resting at the peak?
A. Velocity is positive.
B. Velocity is negative.
C. Velocity is 0.
D. None of the above.
Answer: C
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