Representing Motion

AP Physics 1· difficulty 2/5

0 4 8 t (s) v

At what instant is the object momentarily at rest, according to the vv-vs-tt graph?

  • A

    t=8 st = 8~\text{s}

  • B

    t=0 st = 0~\text{s}

  • C

    t=4 st = 4~\text{s}

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  • D

    It is never at rest

Explanation

Velocity equals zero where the curve crosses the time axis — at t=4 st = 4~\text{s}.

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