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Change in Momentum and Impulse

AP Physics 1· difficulty 3/5

0 1 5 40

A force-vs-time graph shows a triangular pulse rising to 40 N40~\text{N} over 1 s1~\text{s} and falling back to 00 over 4 s4~\text{s}. Total impulse?

  • A

    40 N⋅s40~\text{N·s}

  • B

    100 N⋅s100~\text{N·s}

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  • C

    80 N⋅s80~\text{N·s}

  • D

    200 N⋅s200~\text{N·s}

Explanation

Triangle area: 12(5)(40)=100 N⋅s\tfrac{1}{2}(5)(40) = 100~\text{N·s}.

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