A) \[1.2\,\,kg\]
B) \[2.2\,\,kg\]
C) \[4.2\,\,kg\]
D) \[6.2\,\,kg\]
Correct Answer: A
Solution :
\[F=ma=m\left( \frac{v-u}{t} \right)\] \[0.6\times \left( \frac{6-5}{2} \right)=\frac{0.6\times 2}{1}m=1.2\,\,kg\]
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