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27 February, 14:37

A woodchuck runs 20 m to the right in 5 s, then turns and runs 10 m to the left in 3 s. (a) What is the average velocity of the woodchuck? (b) What is its average speed?

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  1. 27 February, 16:20
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    a) Average velocity = 1.25 m/s to the rightb) Average speed = 3.75 m/s

    Step-by-step explanation:

    A woodchuck runs 20 m to the right in 5 s, then turns and runs 10 m to the left in 3 s.

    Total displacement = 20 - 10 = 10 m to the right

    Total time = 5+3 = 8 s

    Total distance = 20 + 10 = 30 m

    a) We have

    Total displacement = Average velocity x Time

    10 = Average velocity x 8

    Average velocity = 1.25 m/s to the right

    b) We have

    Total distance = Average speed x Time

    30 = Average speed x 8

    Average speed = 3.75 m/s
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