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8 April, 10:38

A ball on a string makes 25.0 revolutions in 9.37 s, in a circle radius 0.450 m. What is it's velocity?

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  1. 8 April, 12:57
    0
    7.54 m/s

    Explanation:

    C = 2πr

    C = 2π (0.450 m)

    C = 2.827 m

    v = d / t

    v = 25.0 (2.827 m) / (9.37 s)

    v = 7.54 m/s
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