A stone is dropped from a height of 20 m. Taking \(g = 10\) m/s², the time it takes to reach the ground is

A. 2 s

B. 4 s

C. 1 s

D. \(\sqrt{2}\) s

Doubtly AI Asked 24 Oct 2026 AI-verified · Oct 2026 ssc 10th Save WhatsApp Report

1 answer

Best answer

Answer: A. 2 s

\(s = \frac{1}{2}gt^2 \Rightarrow 20 = 5t^2 \Rightarrow t = 2\) s.

Doubtly AI · 24 Oct 2026 AI-verified · Oct 2026 Report

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