A) 72
B) 92.5
C) 102.6
D) 129.6
E) 139.6
Correct Answer: D
Solution :
\[s\propto {{u}^{2}}\] \[\Rightarrow \] \[\frac{{{s}_{2}}}{40}={{\left( \frac{90\times \frac{5}{18}}{50\times \frac{5}{18}} \right)}^{2}}\] \[\Rightarrow \] \[{{s}_{2}}=129.6\,m\]You need to login to perform this action.
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