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3.3 R: Forces and Newton's laws

3.3 R: Forces and Newton's laws

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Question 3

Two forces (9i−2j)(9\mathbf{i} - 2\mathbf{j})(9i−2j) N and (i+8j)(\mathbf{i} + 8\mathbf{j})(i+8j) N act on a particle of mass 2 kg.

No other force acts on the particle.

a.

Find the sum of the two forces.

[2]
b.

Find the acceleration of the particle, giving your answer in terms of i\mathbf{i}i and j\mathbf{j}j.

[2]
Markscheme

3.3 R: Forces and Newton's laws Questions

  1. A Level
  2. /Maths
  3. /3.3 R: Forces and Newton's laws

139 exam-style questions on AQA A Level Maths 3.3 R: Forces and Newton's laws, covering 3.3.1 Concept of a force and Newton's first law, 3.3.2 Newton's second law, 3.3.3 Weight and motion under gravity, 3.3.4 Newton's third law and equilibrium, 3.3.5 Addition of forces and resultants (A-level only), and 3.3.6 Friction (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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