A) \[20\,\,kg\,\,m\,\,{{s}^{-1}}\]
B) \[5\,\,kg\,\,m\,\,{{s}^{-1}}\]
C) \[25\,\,kg\,\,m\,\,{{s}^{-1}}\]
D) \[10\,\,kg\,\,m\,\,{{s}^{-1}}\]
Correct Answer: D
Solution :
\[m=500\,\,g=0.5\,\,kg\] \[u=36\,\,km\,\,{{h}^{-1}}=10\,\,m\,\,{{s}^{-1}};\,\,v=-10\,\,m\,\,{{s}^{-1}}\] Now, impulse\[=mv-mu=m(v-u)\] \[=0.5[-10-10]=0.5\times -20=-10\,\,kg\,\,m\,\,{{s}^{-1}}\].You need to login to perform this action.
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