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7 February, 02:19

A swimmer travels from the south end to the north end of a 30.0 m pool in 15.0 s and makes the return trip to the starting position in 19.0 s. What is the average velocity for the roundtrip?

a. 2.50 m/s to the south

b. 2.27 m/s to the north

c. 2.50 m/s to the north

d. 0.0 m/s

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  1. 7 February, 02:35
    0
    v1 = distance / time

    = 30.0 m/15.0s

    =2m/s

    v2=30m/19

    v2=1.57

    total distance

    = 2*30 meters total time

    = 15 + 19 seconds

    Velocity = (final distance - initial distance) / time = (0-0) / (15+19) = 0
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