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Question

An object falls freely from a height. After 3s, what is the distance covered? (Take g\=10m/s2)

Options

Choose one · Correct answer highlighted

Explanation

Use y=12gt2. Here, g=10m/s2, t=3s. As per NCERT Chapter 3, equations v=u+at, s=ut+½at², v²=u²+2as describe uniformly accelerated motion. Applying correct signs and units gives 45 m as the result, so option D is correct.