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Per NCERT, if a ball is dropped from REST and falls for 1 s, how far has it fallen (taking g = 10 m/s²)?
A5 m (using y = ½gt² with g = 10, t = 1)
B10 m
C20 m
D1 m
Answer & Solution
Correct answer: A. 5 m (using y = ½gt² with g = 10, t = 1)
Per NCERT, y = ½ × 10 × 1² = 5 m. The other options misapply the formula.
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