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[" 68.A stone is thrown vertically upwar...

[" 68.A stone is thrown vertically upward with a "],[" speed of "10.0ms^(-1)" from the edge of a cliff "],[65m" high.What will be its speed just before "],[" hitting the bottom ? "],[[" 1) "3.14m/s," 2) "37,14m/s],[" 3) "13.71m/s," 4) "14.71m/s]]

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