Exam-style question
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If a force-time graph shows a triangular area with a base of 3 seconds and a height of 12 N, what is the impulse?.
- A.18 Ns
- B.36 Ns
- C.12 Ns
- D.24 Ns
Model answer
What a good answer should say
- 18 Ns
Explanation
Why this works
The impulse is equal to the area of the triangle under the force-time graph. Area = 0.5 × base × height = 0.5 × 3 s × 12 N = 18 Ns.
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