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Displacement, Velocity, and Acceleration

AP Physics 1· difficulty 2/5

A car accelerates uniformly from 10 m/s10~\text{m/s} to 30 m/s30~\text{m/s}. What is its average velocity during that interval?

  • A

    25 m/s25~\text{m/s}

  • B

    20 m/s20~\text{m/s}

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  • C

    10 m/s10~\text{m/s}

  • D

    30 m/s30~\text{m/s}

Explanation

For uniform acceleration, vˉ=(v0+vf)/2=(10+30)/2=20 m/s\bar v = (v_0 + v_f)/2 = (10 + 30)/2 = 20~\text{m/s}.

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