A) 20 dynes
B) 20 Newtons
C) 20 kg wt
D) 10 Newtons
Correct Answer: B
Solution :
\[F=ma=\frac{dm}{dt}\times v\] \[=5\times {{10}^{-2}}\times 4\times {{10}^{2}}\] \[=\mathbf{20}\,\,\mathbf{Newtons}\]You need to login to perform this action.
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