A) 5 m
B) 4.8 m
C) 3.2 m
D) 3.0 m
Correct Answer: C
Solution :
If the man starts walking on the trolley in the forward direction then whole system will move in backward direction with same momentum. Momentum of man in forward direction = Momentum of system (man + trolley) in backward direction Þ \[80\times 1=(80+320)\times v\]Þ \[v=0.2\ m/s\] So the velocity of man w.r.t. ground \[1.0-0.2=0.8\ m/s\] \[\therefore \] Displacement of man w.r.t. ground \[=0.8\times 4=3.2\ m\]You need to login to perform this action.
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