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Answer to Question #17778 in Mechanics | Relativity for Andrew

Question #17778
A stone thrown horizontally from a height of 6.02 m hits the ground at a distance of 13.50 m. Calculate the initial speed of the stone. Neglect air resistance.

Calculate the speed of the stone as it hits the ground. Neglect air resistance.
Expert's answer
let us find time of falling. height is related with time as
h=gt^2/2
Hence
t=sqrt(2h/g) = sqrt(2*6.02/9.8) = 1.1 s
The horizontal (initial) speed is
13.5/1.1 =12.3 m/s

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