Physics 0625 · IGCSE · Energy, work and power

Energy, work and power — practice question

A car with mass $1500\,\text{kg}$ is travelling at $20\,\text{m s}^{-1}$. It then speeds up until its velocity reaches $25\,\text{m s}^{-1}$. What is the increase in the car’s kinetic energy?

  • A$19\,\text{kJ}$
  • B$38\,\text{kJ}$
  • C$170\,\text{kJ}$
  • D$340\,\text{kJ}$

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