A) 5 m
B) 4.8 m
C) 3.2m
D) 3.0 m
Correct Answer: C
Solution :
Initially momentum of the system is zero. Due to motion of man, trolley along with the man will travel in backwards direction. \[\therefore \] \[80\times 1+(80+320)v'=0\] or \[v'=-0.2\,\,m/s\] Man travels forward with the speed of 1 m/s and backwards with the speed of\[0.2\,\,m/s\]. So, net velocity of the man is\[0.8\,\,m/s\]. \[d=v\times t=0.8\times 4=3.2\]You need to login to perform this action.
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