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13 November, 15:46

An empty propane tank dropped from a hot air balloon hits the ground with a speed of 143.8 m/s. from what height was the tank released?

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  1. 13 November, 17:28
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    What you know:

    Vi=0m/s

    Vf=143.8m/s

    A=-9.8m/s

    d=?

    Use the equation Vf^2=Vi^2+2A (d)

    Rearrange to isolate d: d=Vf^2/2A

    d = (143.8) ^2/2 (-9.8)

    d=20678.4/-19.6

    d=-1055m

    The tank was released from a height of 1055m
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