An object falls freely from a height of 45 m. Taking \(g = 10\) m/s², its velocity on reaching the ground is

A. 30 m/s

B. 45 m/s

C. 90 m/s

D. 15 m/s

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

1 answer

Best answer

Answer: A. 30 m/s

\(v^2 = u^2 + 2gs = 0 + 2 \times 10 \times 45 = 900 \Rightarrow v = 30\) m/s.

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

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