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The bunny is initially hopping east at 7 m/s when it first sees the fox. Over the next half second the bunny changes its velocity to west at 12 m/s and escapes. What was the bunny's average acceleration (magnitude and direction) during this half-second interval?

  • physics -

    If velocity and acceleration are considered positive in the east direction,

    DeltaV = [-12 -7] = -19 m/s

    acceleration = DeltaV/t = -19/(1/2)
    = -38 m/s^2

    Magnitude = 38 m/s^2, direction = west

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