- #1
WorkingHard2017
- 3
- 1
Homework Statement
A swimmer who achieves a speed of of 0.75 m/s in still water swims directly across a river 72m wide. The swimmer lands on the far shore at a position 54m downstream from the starting point. Determine the direction the swimmer would have the aim to land directly across from the starting position
Homework Equations
v swimmer relative to ground = v swimmer relative to water + v water relative to ground
The Attempt at a Solution
v water relative to ground = 0.56 m/s[/B]
tanθ = (0.56/0.75)
θ = 37° downstream from the starting position
so to land directly across the starting point, the swimmer would need to aim 37° upstream from the starting position. Is this correct? My book says 42° upstream from the starting position, but I can't see how that makes sense.