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The energy possessed by a body in motion is called

  • A.Potential energy
  • B.Kinetic energy
  • C.Both of above
  • D.None of above

Answer: B

The energy of a body in motion is its kinetic energy.

\[KE = \tfrac{1}{2}mv^2\] Note that it varies as the square of the speed, so doubling the speed quadruples the energy - which is why stopping distances grow so sharply with speed.

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