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[" A ball is projected from a certain po...

[" A ball is projected from a certain point on the "],[" surface of a planet at a certain point on the "],[" horizontal surface.The horizontal and vertical "],[" displacements "x" and "y" vary with time tin second "],[" as : "x=10sqrt(3)t;y=10t-t^(2)" the maximum height "],[" attained by the ball is :- "],[[" (1) "100m," (2) "75m],[" (3) "50m," (4) "25m]]

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