2025 IGCSE 0580 February/March P42 Q16

2025 IGCSE 0580 February/March P42 Q16

6 marks

The graph shows the speed of a cyclist during a journey of \(30\) seconds.

  1. Write down the acceleration of the cyclist between \(15\) seconds and \(25\) seconds.[1]
  2. By drawing a tangent, find an estimate for the acceleration of the cyclist at \(7.5\) seconds.[2]
  3. Work out the average speed of the cyclist between \(15\) seconds and \(30\) seconds.[3]

Solution:

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Answer:(a) \(0\text{ m/s}^2\). (b) Approximately \(0.305\text{ m/s}^2\). (c) \(6.67\text{ m/s}\).

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