A) 400kg
B) 1250kg
C) 200kg
D) 2500kg
Correct Answer: A
Solution :
Since, \[Since,K.E=\frac{1}{2}m{{v}^{2}}\] Or \[5000=\frac{1}{2}m\times {{5}^{2}}[\because v=5m/s\text{given}]\] Or \[5000=\frac{1}{2}m\times 25\] \[\Rightarrow \] \[\frac{5000\times 2}{25}=m\] Or \[m=400kg\]
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