Exam-style question
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What is the horizontal component of a vector with a magnitude of 10 N at an angle of 30° to the horizontal?.
- A.8.66 N
- B.5 N
- C.10 N
- D.7.5 N
Model answer
What a good answer should say
- 8.66 N
Explanation
Why this works
To find the horizontal component, use the formula: horizontal component = magnitude × cos(angle). Substituting gives: 10 N × cos(30°) = 10 N × √3/2 = 8.66 N.
Thus, the horizontal component is 8.66 N.
Common mistake
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