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Physics (AS & A Level) · Oct / Nov 2024 · Paper 12 · Question 4

9702Equations of motion

The graph shows how the acceleration of an object moving in a straight line varies with time. The object starts from rest. Which graph shows the variation with time of the velocity of the object over the same time interval?

  1. Avelocity-time graph: velocity starts at 0, increases with increasing gradient then decreasing gradient, approaching a constant positive value
  2. Bvelocity-time graph: velocity starts at 0, rises to a peak then decreases back to 0
  3. Cvelocity-time graph: velocity starts at 0, rises to a positive peak, decreases through 0 to a negative minimum, then returns to 0
  4. Dvelocity-time graph: velocity starts at 0 and increases with increasing gradient (concave up)

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Correct answer: A. velocity-time graph: velocity starts at 0, increases with increasing gradient then decreasing gradient, approaching a constant positive value

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