A stone falls from rest for 2 s. Taking g = 10 m/s², how far does it fall?
Answer and explanation
Correct answer: B. 20 m
- Step 1: Use s = ½gt². Step 2. s = 5 · 4 = 20 m. Answer: 20 m. Why not the others: The other results omit squares or the factor ½.
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