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29 July, 22:51

If the final speed of an object as is strikes the ground is 77 m/s and it was in the air for 6.5 seconds. What was the initial downward speed of the object?

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  1. 29 July, 22:56
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    The answer to your question is: 13.2 m/s

    Explanation:

    final speed (fs) = 77 m/s

    t = 6.5 s

    gravity (g) = 9.81 m/s2

    initial speed (is) = ?

    Formula

    fs = is + gt from this equation we clear "is" = fs - gt

    Substitution is = 77 - (9,81) (6.5)

    Process is = 77 - 63.8

    is = 13.2 m/s
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