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Displacement, Velocity, and Acceleration

AP Physics 1· difficulty 1/5

Starting from rest, an object accelerates at 4.0 m/s24.0~\text{m/s}^2 for 5.0 s5.0~\text{s}. How far does it travel?

  • A

    100 m100~\text{m}

  • B

    20 m20~\text{m}

  • C

    10 m10~\text{m}

  • D

    50 m50~\text{m}

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Explanation

Δx=12at2=12(4.0)(25)=50 m\Delta x = \tfrac{1}{2} a t^2 = \tfrac{1}{2}(4.0)(25) = 50~\text{m}.

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