A man wish to cross a river in a boat if he crosses the river in minimum time,he takes 10 minutes to cross with a drift 120m. If the width of river is 150m then the ratio of velocity of man with respectto that of velocity of river is
Answers
Answered by
2
Answer:
velocityoftheriver=
time
driftduringtheminimumtime
=
10min
120m
=12m/min
v
b/r
cosθ
d
=12.5andv
b/r
sinθ=12and
v
b/r
d
=10
v
b/r
=20m/min
d=200m
Similar questions