Question #179983

a stone is thrown straight downward with an initial speed 9.0m/s from a height of 25m.Find the time taken to reach the ground 


1
Expert's answer
2021-04-13T06:37:56-0400

h=v0t+gt2/225=9t+9.81t2/2h=v_0t+gt^2/2\to25=9t+9.81t^2/2\to


4.905t2+9t25=0t=1.52 (s)4.905t^2+9t-25=0\to t=1.52\ (s) . Answer

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