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1 markMotions

CAPE Physics Unit 1 · 2004 · Paper 2 · Question 5(b)(iii)

Two trolleys are used to investigate collisions. A trolley of mass 1.60 kg is pushed and hits a second trolley, of mass 0.80 kg, moving in the same direction but at a lower speed. The experiment is repeated and results are shown for 1st and 2nd collisions.

Why should the speeds be measured IMMEDIATELY before and after the collisions?

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Other parts of this question

  1. 5(a)(i)Define 'linear momentum' and state the principle of conservation of linear momentum.[8 marks]
  2. 5(a)(ii)a)Distinguish between 'inelastic' collision and 'perfectly elastic' collisions.[1 mark]
  3. 5(a)(ii)b)Describe how the conservation of energy applies in EACH case.[1 mark]
  4. 5(a)(iii)Explain the meaning of the 'impulse of a force' and show the relation between the impulse of a force in a body and the momentum of the body.[1 mark]
  5. 5(b)(i)Show whether or not the two sets of data are consistent with the law of conservation of momentum.[12 marks]
  6. 5(b)(ii)Determine whether the collisions are elastic or inelastic.[1 mark]
  7. 5(b)(iv)a)What would be the TOTAL momentum after collision?[1 mark]
  8. 5(b)(iv)b)Explain your answer.[1 mark]

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