Physics 0625 · IGCSE · Energy, work and power

Energy, work and power — practice question

A car is travelling along a straight, level road. The car possesses $1.6\,\text{MJ}$ of kinetic energy. The car speeds up for $20\,\text{s}$ until the kinetic energy of the car rises to $2.5\,\text{MJ}$. What is the minimum average power generated by the car engine for this acceleration?

  • A$45\,\text{W}$
  • B$205\,\text{W}$
  • C$45\,\text{kW}$
  • D$205\,\text{kW}$

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