A) 2000 W
B) 22500 W
C) 5000 W
D) 2250 W
E) 1000 W
Correct Answer: B
Solution :
\[v=u+at\Rightarrow a=\frac{15-0}{5}=3\,m/{{s}^{2}}\] \[\left( \because v=54\,km/h=\frac{54\times 5}{18}=15m/s \right)\] Hence, \[{{P}_{av}}=\frac{1}{2}Fv=\frac{1}{2}mav\] \[=\frac{1}{2}\times 1000\times 3\times 15=22500\,W\]You need to login to perform this action.
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