A) \[\frac{2}{3}\]
B) \[\frac{2}{5}\]
C) \[\frac{8}{9}\]
D) \[\frac{5}{7}\]
Correct Answer: B
Solution :
Let v be the velocity of the boat with respect to water then from conservation of linear momentum. \[\left( 200+50 \right) v+50\times 2 =50\times 0+200\times 0\] \[250\,v=-\,100\] \[v=-\frac{2}{5}m/s\] \[\left| v \right|=\frac{2}{5}m/s\] The negative sign indicates that velocity of boat is opposite to the velocity of boy.You need to login to perform this action.
You will be redirected in
3 sec