An engineer is calculating the force on a bridge support. Vector **p** = (6, 8) represents a force in newtons. What is the magnitude of this force?

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Question

An engineer is calculating the force on a bridge support. Vector **p** = (6, 8) represents a force in newtons. What is the magnitude of this force?

Accepted Answer

10 N — Award 1 mark for correct calculation using Pythagoras: |**p**| = √(6² + 8²) = √(36 + 64) = √100 = 10 N. A is incorrect — this is 8 − 6. C is incorrect — this is 6 + 8. D is incorrect — this is 6² + 8² without taking the square root.

Answer

14 N

Answer

10 N

Answer

100 N

Answer

2 N

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