A swimmer is capable of swimming 0.45m/s in still water (a) If sheaim her body directly across a 75 m wide river whose current is0.40m/s how far downstream ( from a point opposite her startingpoint ) will she land ? (b) how long will it take her to reach theother side

remolatg

remolatg

Answered question

2021-01-02

A swimmer is capable of swimming 0.45m/s in still water (a) If sheaim her body directly across a 75 m wide river whose current is0.40m/s how far downstream ( from a point opposite her startingpoint ) will she land ? (b) how long will it take her to reach theother side

Answer & Explanation

cheekabooy

cheekabooy

Skilled2021-01-03Added 83 answers

First find the time it takes her to swim across
d = vt
t = d/v
t = 75/.45
t =166.67s
distanced moved down current = velocity x time
d = 0.40 x 166.67 =1.11m
Jeffrey Jordon

Jeffrey Jordon

Expert2021-10-14Added 2605 answers

Horizontal speeds (finding the angle):

Vx=0=0.40.45cos(θ)

cos(θ)=0.40.45

θ=27.266

Then finding vertical speed:

Vy=0.45sin(θ)

Vy=0.20615

Then the time:

t=750.20615

time = 363.809852 seconds

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