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20 March, 17:33

An object has 100 J of kinetic energy and a mass of 2 g. How fast was it traveling?

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  1. 20 March, 17:55
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    K. E = 1/2 mv²

    100 = 1/2 (2) (v) ²

    100 = both 2 cancel (v) ²

    Taking Square root on b/s

    √100 = √v²

    10 = v
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