A) 8.2 sees
B) 7.8 sees
C) 8 sees
D) 7.2 sees
Correct Answer: D
Solution :
[d] Speed \[=90\times \frac{5}{18}=25\] m/sec Time=\[\frac{d}{v}=\frac{180}{25}-7.2\]sec.You need to login to perform this action.
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