Science

9th -

12thgrade

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Work, Power, and Energy

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16 questions

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  • 1. Multiple Choice
    2 minutes
    1 pt

    Pick which equation you would use to solve:
    100 J of work were done over 5 seconds to do three push ups.

     PE=mghPE=mgh 


     KE =12mv2KE\ =\frac{1}{2}mv^2  

     W=FxW=Fx  

     P=WtP=\frac{W}{t}  

  • 2. Multiple Choice
    2 minutes
    1 pt

    Pick which equation you would use to solve:

    A rock of 5kg, is dropped from a height of 5 meters and accelerates to the ground at a rate of 9.81m/s^2.

    PE=mghPE=mgh

    KE=12mv2KE=\frac{1}{2}mv^2

    W=FxW=Fx

    P=WtP=\frac{W}{t}

  • 3. Multiple Choice
    2 minutes
    1 pt

    Pick which equation you would use to solve:

    A tennis ball with a mass of 1kg is falling to the ground at 9.81 m/s^2. The distance it covers is 2meters. 

    PE=mghPE=mgh

    KE=12mv2KE=\frac{1}{2}mv^2

    W=FxW=Fx

    P=WtP=\frac{W}{t}

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