Physics 9702 · AS & A Level · Energy conservation

Energy conservation — practice question

A car moving along a level road at a constant $20\,\text{m s}^{-1}$ while opposing a constant resistive force produces a power of $40\,\text{kW}$. What is the size of the resistive force?

  • A200 N
  • B800 N
  • C2000 N
  • D4000 N

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