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Question

Two stones are dropped from a height of 245m, with a 3s interval. What is their separation when the second stone has fallen for 4s? (Take g\=10m/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 165 m. This confirms option C as correct by uniformly accelerated motion equations.