A) 20m
B) 25m
C) 30m
D) 45m
Correct Answer: D
Solution :
\[v=\frac{u}{2}=u-gt\] \[=u-\frac{3}{2}g\] \[t=1.5\,\,s\] \[u=30\,m/s\] \[h=\frac{{{u}^{2}}}{2g}\] \[h=\frac{30\times 30}{2\times 10}=45\,m\]You need to login to perform this action.
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