""A ball is thrown vertically upwards with a velocity of 49 m/s"". Calculate:-
(i) the maximum height to which it rises?
(ii) the total time it takes to return to the surface of the earth.?
In this question, should I take 9.8 or 10 as the gravitational force? Actually if I take 9.8 final ans is different and if I take 10 then again the final ans is different. So what should I do?
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