Answer to Question #144056 in Physics for Known unknown

Question #144056

how much time does stone take to reach on earth surface drops from 20m height and what will be the acceleration due to gravity after 3sec?

Expert's answer

"h=0.5gt^2\\\\20=0.5(9.8)t^2\\\\t=2.0\\ s\\\\g=9.8\\frac{m}{s^2}"

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