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7 November, 18:36

A gnat takes off from one end of a pencil and flies around erratically for 18.6 seconds before landing on the other end of the same pencil. If the gnat flew a total distance of 7.15 meters, and the pencil is 6.13 cm long, find the gnat's average speed, as well as the magnitude of the gnat's average velocity vector.

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  1. 7 November, 18:47
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    Total distance traveled = 7.15 m and time = 18.6 s

    average speed = 7.15/18.6 = 0. 3844 m / s = 38.44 cm / s

    Total displacement = 6.13 cm, time = 18.6 s

    Average velocity = 6.13/18.6 = 0.3295 cm/s = 3.295 mm / s.
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