- #1
gungo
- 27
- 1
Homework Statement
A swimmer jumps into a 5.1 km river and swims straight to the other side at 0.87 km/h [N].
There is a current in the river of 2.0 km/h [W]
a)How long does it take the swimmer to reach the other side?
b)How far downstream has the current moved her by the time she reaches the other side?
Homework Equations
v= d/t
a^2+b^2=c^2
The Attempt at a Solution
a) I got the correct answer but I don't understand why the 0.87 km/h [N] was used instead of the 2.0 km[W]
t=d/v
t=5.1/0.87
t=5.9 hrs
b) total velocity= √0.87^2+2^2
=2.18
I'm really not sure what I'm trying to look for??