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Physics (AS & A Level) · Oct / Nov 2025 · Paper 14 · Question 4

9702Momentum and Newton’s laws of motion

An object falls from rest towards the ground. Air resistance is negligible. Which graph shows the variation of the momentum $p$ of the object with time $t$ until it hits the ground?

  1. AGraph A: p constant (horizontal line)
  2. BGraph B: p increasing with decreasing gradient (curve)
  3. CGraph C: p increasing linearly (straight line through origin)
  4. DGraph D: p increasing with increasing gradient (curve)

As printed in the paper

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Correct answer: C. Graph C: p increasing linearly (straight line through origin)

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