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2 marksKinetic Energy, Ek

CSEC Physics · May/June 2010 · Paper 2 · Question 2(b)b)

Usain Bolt completed a 100 m final in 9.69 s, accelerating uniformly from rest for the first 6.5 seconds, covering 60 m before coasting at maximum speed to the finish.

Calculate the value of this energy if his mass was 86 kg.

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Other parts of this question

  1. 2(a)(i)Define Velocity.[2 marks]
  2. 2(a)(ii)Define Acceleration.[2 marks]
  3. 2(a)(iii)Define Linear momentum.[2 marks]
  4. 2(b)(i)Calculate his average speed for the first 6.5 s.[2 marks]
  5. 2(b)(ii)What was his maximum speed?[2 marks]
  6. 2(b)(iii)What was his acceleration during the first 6.5 s?[2 marks]
  7. 2(b)(iv)a)What MAJOR form of energy did BOLT possess when he crossed the finish line?[1 mark]

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