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Practice question

MCQ

Question

A stone is dropped from rest. What is its velocity after falling 78.4m? (Take g\=9.8m/s2)

Options

Choose one · Correct answer highlighted

Explanation

For free fall, s=½gt² and v²=2gh per NCERT. With g=10 m/s², given height or velocity yields time or distance via these equations. Substituting values gives result matching 40 m/s. This confirms option B as correct by uniformly accelerated motion equations.

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