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Physics (AS & A Level) · Feb / March 2016 · Paper 12 · Question 11

9702Non-uniform motion

An object falls freely from rest in a vacuum. The graph shows the variation with time t of the velocity v of the object. Which graph, using the same scales, represents the object falling in air?

  1. AGraph A: straight line through origin with same gradient as vacuum graph
  2. BGraph B: curve starting at origin, gradient decreasing to horizontal asymptote
  3. CGraph C: curve starting at origin with decreasing gradient, not reaching horizontal
  4. DGraph D: curve starting at origin with increasing gradient

As printed in the paper

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Correct answer: C. Graph C: curve starting at origin with decreasing gradient, not reaching horizontal

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