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1. the surface of a hill is inclined at α to horizontal,a stone is thrown from the top of the hill at initial speed u at angle β with vertical line. How far from the top will the stone strike the ground?
2. R=(u^2 sin2θ)\g or by rotational co ordinate geometry3. can't prove that the dist covered by the stone is 2(u^2 sinβcos(α-β))\gcos^2 α
2. R=(u^2 sin2θ)\g or by rotational co ordinate geometry3. can't prove that the dist covered by the stone is 2(u^2 sinβcos(α-β))\gcos^2 α
