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4 marksDynamics: Motion in a Straight Line

CSEC Physics · 1989 · Paper 2 · Question 4(b)(i)

A girl of mass 50 kg starts running along a straight level road and stops after 70 seconds. The variation of her speed with time is shown in Figure 5.

Calculate the total distance the girl runs.

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Other parts of this question

  1. 4(a)Complete the statement by filling in EACH blank space with an appropriate word.[6 marks]
  2. 4(b)(ii)What is her acceleration over the first 20 seconds?[1 mark]
  3. 4(b)(iii)What is the magnitude of the force that produces this acceleration?[1 mark]
  4. 4(b)(iv)How does the force in (iii) above arise?[2 marks]
  5. 4(c)(i)Calculate the girl's momentum after 10 seconds.[1 mark]
  6. 4(c)(ii)Calculate the girl's momentum after 40 seconds.[1 mark]

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