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1.10 Vectors

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Question 55

A subterranean tunnel follows a linear path l l\,l connecting two access shafts. Relative to a fixed surveying origin OOO, where coordinates are measured in metres:

  • shaft A A\,A has position vector i+2j−3k\mathbf{i} + 2\mathbf{j} - 3\mathbf{k}i+2j−3k
  • shaft B B\,B has position vector 7i−j+0k7\mathbf{i} - \mathbf{j} + 0\mathbf{k}7i−j+0k
a.

(i) Find AB→\overrightarrow{AB}AB. (ii) Find a vector equation for the line l l\,l representing the tunnel path.

[3]
b.

A utility sensor is located at point C C\,C with position vector 5i+3j+2k5\mathbf{i} + 3\mathbf{j} + 2\mathbf{k}5i+3j+2k. A maintenance point P P\,P is located on lll.

Given that CP→\overrightarrow{CP}CP is perpendicular to lll:

Find the position vector of the point PPP.

[4]
Markscheme

1.10 Vectors Questions

  1. A Level
  2. /Maths
  3. /1.10 Vectors

197 exam-style questions on OCR A Level Maths 1.10 Vectors, covering 1.10.1 Vectors in two dimensions, 1.10.2 Vectors in three dimensions (A-level only), 1.10.3 Magnitude and direction of vectors, 1.10.4 Basic operations on vectors, 1.10.5 Position vectors, 1.10.6 Distance between points, 1.10.7 Problem solving using vectors, 1.10.8 Vectors in kinematics, and 1.10 Vectors. Each one has a worked solution and a mark scheme showing where the marks go.

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