A) 1.25 m
B) 21.25 m
C) 30 m
D) 32.5 m
Correct Answer: C
Solution :
\[u=5\text{ }m/s\] at max. height\[v=0\] From the equation \[v=ugt\] \[0=510\times t\] \[=510t\] \[t=\frac{1}{2}S\] Time taken by the stone to reach the edge of the wall is \[\frac{1}{2}s+\frac{1}{2}s=1s\] Time taken to reach the water level\[=3s1=2s\] Depth of the water level is \[h=ut+\frac{1}{2}g{{t}^{2}}\] \[=5\times 2+\frac{1}{2}\times 10\times {{(2)}^{2}}\] \[=30\text{ }m.\]You need to login to perform this action.
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