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Translational Kinetic Energy

AP Physics 1· difficulty 1/5

A 2.0 kg2.0~\text{kg} object moves at 6.0 m/s6.0~\text{m/s}. What is its kinetic energy?

  • A

    36 J36~\text{J}

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  • B

    6 J6~\text{J}

  • C

    18 J18~\text{J}

  • D

    12 J12~\text{J}

Explanation

K=12mv2=12(2.0)(6.0)2=36 JK = \tfrac{1}{2}m v^2 = \tfrac{1}{2}(2.0)(6.0)^2 = 36~\text{J}.

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