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Physics · Oct / Nov 2017 · Paper 12 · Question 8

5054Energy

A tennis ball of mass 56 g is travelling at 1500 metres / minute. Which expression is equal to the kinetic energy, in joules, of the tennis ball?

  1. A\frac{1}{2} \times 0.056 \times (25)^2
  2. B\frac{1}{2} \times 0.056 \times (1500)^2
  3. C\frac{1}{2} \times 56 \times (25)^2
  4. D\frac{1}{2} \times 56 \times (1500)^2

As printed in the paper

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Correct answer: A. \frac{1}{2} \times 0.056 \times (25)^2

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