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3 marksSI Units

CAPE Physics Unit 1 · 2015 · Paper 2 · Question 4(c)

Sprinters in a 100 m race accelerate for the first one-third of the race. The formula t = (2s/a)^x is proposed to compute the duration of the acceleration phase.

By comparing the units, find the value of x.

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Other parts of this question

  1. 4(a)Write expressions for A_x and A_y in terms of A and θ.[2 marks]
  2. 4(b)(i)Represent his resultant displacement using a suitable vector diagram.[3 marks]
  3. 4(b)(ii)Determine his northerly displacement from his starting point.[3 marks]
  4. 4(b)(iii)Hence, determine his resultant displacement from his starting point.[4 marks]

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