A-level · Forces & Newton's laws

Newton's laws and F = maExam-style questions

Newton's three laws and the one equation that runs all of dynamics — the RESULTANT force equals mass times acceleration — applied along a line and to forces given as 2-D vectors, why weight is mg and the normal reaction is whatever balances the rest, and how a lift problem is just F = ma done vertically.

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12 questions · A-level level · mark scheme and worked solution on each · no sign-up to try

DifficultyAllLevel 2Level 3Level 4Level 5
  1. 1
    A force of 66 N acts on a particle of mass 22 kg. Find the acceleration.
    Level 2 · 2 marksTry it
  2. 2
    A particle of mass 55 kg accelerates at 4 m s−24\ \text{m s}^{-2}. Find the resultant force on it.
    Level 2 · 2 marksTry it