What net force (in N) gives a mass an acceleration of ?
Answer and explanation
Correct answer: B. 12
**
- Step 1: Apply Newton's second law: .
- Step 2: Insert and : .
- Step 3: Multiplying yields the required net force of .
Answer
12.
Why not the others: '1/3' divides mass by acceleration () instead of multiplying; '8' adds mass and acceleration () instead of multiplying them; '120' introduces an extra factor of , confusing acceleration with .
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