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Change in Momentum and Impulse

AP Physics 1· difficulty 2/5

0 2 4 4 12 t (s) p (kg·m/s)

The graph shows an object's momentum over time. What impulse was delivered to the object at t=2 st = 2~\text{s}?

  • A

    4 N⋅s4~\text{N·s}

  • B

    12 N⋅s12~\text{N·s}

  • C

    16 N⋅s16~\text{N·s}

  • D

    8 N⋅s8~\text{N·s}

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Explanation

Impulse equals the change in momentum: Δp=12−4=8 N⋅s\Delta p = 12 - 4 = 8~\text{N·s}.

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