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Theresa ran on a treadmill for thirty mi...


Theresa ran on a treadmill for thirty minutes, and her time and speed are shown on the graph above. According to the graph, which of the following statements is NOT true concerning Theresa’s run?

A

Theresa ran at a constant speed for five minutes

B

Theresa’s speed was increasing for a longer period of time than it was decreasing.

C

Theresa’s speed decreased at a constant rate during the last five minutes.

D

Theresa’s speed reached its maximum during the last ten minutes.

Text Solution

Verified by Experts

The correct Answer is:
B
Theresa’s speed was increasing from 0 to 5 minutes and from 20 to 25 minutes, which is a total of 10 minutes. Theresa’s speed was decreasing from 10 minutes to 20 minutes and from 25 to 30 minutes, which is a total of 15 minutes. Therefore, Theresa’s speed was NOT increasing for a longer period of time than it was decreasing. Choice A is incorrect. Theresa ran at a constant speed for the 5-minute period from 5 to 10 minutes. Choice C is incorrect. Theresa’s speed decreased at a constant rate during the last 5 minutes. Choice D is incorrect. Theresa’s speed reached its maximum at 25 minutes, which is within the last 10 minutes.
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