I think i have solved it. The angle is 45 degrees.
The 3 velocities i think are a red herring. Since no actual values are given ie no actual numerical relationship between x and velocity.
Elite2
water speed next to banks = V
water speed in center of river = d
speed of river is parabolic with distance across river
distance across river=x
The rest of the question for completeness is given this info what id the angle A needed for the swimmer who swims with speed w to swim directly across...
Hi
I have.
This is complicated because the question does not state what type of parabola ie its eqn so I don't know what assumptions can be made. Calculus would only be relevant if the eqn is given.
Unless i am missing something obvious.
Thanks in advance for any help.
The velocity of a river varies parabolicly with V adjacent to the banks and max velocity d halfway betwee the banks. The flow of river is parallel to the bank.
The width of the river is x.
How do you calculate the average velocity?