Question

A man can swim at a speed 2 m/s in still water. He starts swimming in a river at an angle 150to the dires
of water flow and reaches the directly opposite point on the opposite bank.
(a) Find the speed of flowing water
(b) If width of river is 1 km then calculate the time taken to cross the river.
1​

Answer 1

Answer:

Here V

R

= velocity of river

V

M

= velocity of man in still water = 2m/s (given)

from figure it is clear that

sinθ=

V

M

V

R

, where θ=60 degree

⟹V

R

=

3

m/s

from figure it is evident that

V

M

cosθ×t=1000m

⟹t=1000

HOPE YOU CAN UNDERSTAND

Explanation:

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