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Representing Motion

AP Physics 1· difficulty 2/5

0 3 5 7 t (s) x (m)

The graph shows an object's position over time. During which interval is the object's velocity <strong>zero</strong>?

  • A

    5 s<t<7 s5~\text{s} < t < 7~\text{s}

  • B

    Never — the object is always moving.

  • C

    3 s<t<5 s3~\text{s} < t < 5~\text{s}

    check_circle
  • D

    0<t<3 s0 < t < 3~\text{s}

Explanation

Velocity is the slope of an xx-vs-tt graph. Only between t=3 st = 3~\text{s} and t=5 st = 5~\text{s} is the curve flat (slope =0= 0), so that's the interval of zero velocity.

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