Physics 0625 · IGCSE · Energy, work and power

Energy, work and power — practice question

A woman with mass $50\,\text{kg}$ has kinetic energy of $81\,\text{J}$. What is her speed?

  • A$1.3\,\text{m s}^{-1}$
  • B$1.6\,\text{m s}^{-1}$
  • C$1.8\,\text{m s}^{-1}$
  • D$3.2\,\text{m s}^{-1}$

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