A) 4 kg m/s
B) 80 kg m/s
C) 8 kg m/s
D) 40 kg m/s
Correct Answer: B
Solution :
[b] As momentum, p = m \[\times \] v = 0.2 \[\times \] 400 |
\[=\frac{2}{10}\times 400=80kg-m/s\] |
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