You want to swim straight across a river that is 76 m wide. youfind that you can do this if you swim 28degree upstream at aconstant rate of 1.5m/s relative to the water. at what rate doesthe river flow? the angle is measured from the river bank( directlyupstream is θ=0 degree while directly across the river isθ=90degree).

Explanation:

given,                                          

width of river = 76 m                    

swimming at an angle = 28°                

constant rate of speed = 1.5 m/s        

rate at which river flow = ?                              

hence, the rate of flow of river is equal to

305.7

explanation:

density =m/v

density =917/3.00

density = 305.

approximately = 305.7

in four significant figures