A) 24 Ns
B) 20 Ns
C) 12 Ns
D) 6 Ns
Correct Answer: C
Solution :
[c] Change in momentum, \[\Delta p=\int_{{}}^{{}}{Fdt}\] \[=\text{Area of F-t graph }\] \[\text{= ar of }\Delta -\text{ ar of }\text{ }+\text{ ar of }\] \[=\frac{1}{2}\times 2\times 6-3\times 2+4\times 3=12\text{ N-s}\]
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