Physics 9702 · AS & A Level · Energy conservation

Energy conservation — practice question

A man is riding in a buggy that is being pulled by a wire connected to a kite. The wire makes an angle of $40^\circ$ to the horizontal and maintains a steady tension of $200\,\text{N}$. The man and buggy move $20\,\text{m}$ in a straight horizontal line. The wire and the buggy’s route lie in the same vertical plane. What is the work done by the tension force on the man and buggy?

  • A$2.6\,\text{kJ}$
  • B$3.1\,\text{kJ}$
  • C$3.4\,\text{kJ}$
  • D$4.0\,\text{kJ}$

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