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26 January, 15:15

a model rocket climbs 200 m in 4 seconds. if was moving 10 m/s to begin with, what is it's final velocity?

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  1. 26 January, 17:42
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    So first Identify all the given Varibales so u can choose which Eqauton to use

    D=200m

    T=4s

    Vi=10m/s

    Vf=?

    You should this equation

    D = 0.50 (Vf+Vi) T

    Plug in the values

    200 = 0.50 (Vf+10) 4

    Divide the 4 out of the right side and if you do sumthing to one side you gotta do it to the other

    200 divided by 4 = 0.50 (Vf+10)

    50 = 0.50 (Vf+10)

    Now expand the 0.50

    So 50 = 0.5Vf + 5 (because 0.5 times 10 is 5)

    Now get rid of the 5

    50-5 = 0.5Vf

    45 = 0.5Vf now Divide the 0.5 out

    45 divided by 0.5 = Vf

    And 45/0.5 is 90

    So 90=Vf

    Therefore the final Velocity is 90m/s
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