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1.13 J: Vectors

1.13 J: Vectors

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Question 52

In this question the unit vectors i\mathbf{i}i and j\mathbf{j}j are due east and due north respectively.

At time t=0t = 0t=0, a particle P P\,P is at the position (−2i+4j)(-2\mathbf{i} + 4\mathbf{j})(−2i+4j) m relative to a fixed origin OOO.

P P\,P moves with constant velocity (4i−6j)(4\mathbf{i} - 6\mathbf{j})(4i−6j) m s−1^{-1}−1.

a.

Find the speed of PPP, giving your answer to 3 significant figures.

[3]
b.

Show that P P\,P passes through the point A A\,A with position vector (8i−11j)(8\mathbf{i} - 11\mathbf{j})(8i−11j) m.

[3]
Markscheme

1.13 J: Vectors Questions

  1. A Level
  2. /Maths
  3. /1.13 J: Vectors

168 exam-style questions on AQA A Level Maths 1.13 J: Vectors, covering 1.13.1 Vectors in two and three dimensions, 1.13.2 Magnitude and direction of a vector, 1.13.3 Vector arithmetic, 1.13.4 Position vectors, and 1.13.5 Vectors to solve problems. Each one has a worked solution and a mark scheme showing where the marks go.

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