A) u = 10 m/s, T = 2s
B) u = 10 m/s, T = 4s
C) u = 20 m/s, T = 2s
D) u = 20 m/s, T = 4s
Correct Answer: D
Solution :
\[u=\sqrt{2gh}=\sqrt{2\times 10\times 20}=20\ m/s\] and \[T=\frac{2u}{g}=\frac{2\times 20}{10}=4\]secYou need to login to perform this action.
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