Question 1
In 20 minutes, Kara ran 2.40 km on a treadmill facing due east. Relative to the gym, what were her displacement and average velocity during this time interval?
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0; 0
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0; 2.00 m/s
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2.40 km, east; 0
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2.40 km, east; 2.00 m/s, east
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2.40 km, west; 2.00 m/s, west
Question 2
The area under a graph of ax vs. t from t = ti to t = tf represents
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xf−xi.
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vf−vi.
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xavg.
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vavg.
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aavg.