A cylindrical tank is placed on a platform 5 m high. Initially the tank is filled with water up to a height 5 m. An orifice is made in the side wall of tank just at the bottom. Speed with which water coming out of the orifice hits ground is nearly: (take g = 10 m/s2)

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9 m/s

7.2 m/s

14 m/s

18 m/s

answer is C.

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Detailed Solution

ux=2gh=2×10×5=10 m/s-1 uy=2gH=2×10×5=10 ms-1 Speed =ux2+uy2=(10)2+(10)2≈14 ms-1.

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