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[" 09.A ball is projected horizontally w...

[" 09.A ball is projected horizontally with a velocity of "],[5ms^(-1)" from the top of a building "19.6m" high.How "],[" long will the ball take to hit the ground? "],[[" (a) "sqrt(2)s," (b) "2s],[" (c) "sqrt(3)s," (d) "3s]]

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