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A stone is dropped into water from a bri...

A stone is dropped into water from a bridge 44.1 m above the water. Another stone is thrown vertically downward 1 s later. Both strike the water simultaneously. What was the initial speed of the second stone?

Text Solution

Verified by Experts

`t=sqrt((2 xx 44.1)/(9.8))s =sqrt(9s)=3s`
`44.1=v xx 2+1/2 xx 9.8 xx 2 xx 2`
`or 2v=44.1 -4.9 xx4=24.5 or`
`v=(24.5)/(2) ms^(-1) =12.25ms^(-1)`
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