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OpenStudy (anonymous):
MEDAL GIVEN TO CORRECT ANSWER. Runner 1 is going 7 m/s west. Runner 2 is going 4 m/s east. From the frame of reference of runner 1, what is the velocity of runner 2? A. 11 m/s west B. 4 m/s east C. 11 m/s east D. 3 m/s east
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OpenStudy (anonymous):
It looks to runner 1 that the other runner is going 7 + 4 = 11 m/s in the opposite direction, which would be east.
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