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Physics (AS & A Level) · Feb / March 2018 · Paper 12 · Question 13

9702Equilibrium of forces

In which example is it not possible for the underlined body to be in equilibrium?

  1. AAn aeroplane climbs at a steady rate.
  2. BAn aeroplane tows a glider at a constant altitude.
  3. CA speedboat changes direction at a constant speed.
  4. DTwo boats tow a ship into harbour.

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Correct answer: C. A speedboat changes direction at a constant speed.

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