Posted by **Roxie Anne** on Friday, February 11, 2011 at 10:58am.

An athlete in a competition needs to get from point A to another point B directly across from a river. He can swim in stationary water at a speed of 2.0 mi/h, and he can run at a speed of 5.0 mi/h. If the river does not flow, then to get from A to B he would certainly choose to swim directly across. But the river flows at a speed of 1.5 mi/h downstream. Given that, what would his strategy be in order to minimize the total time it takes to move from A to B? i.e., at what angle upstream (measured from the line AB) should he be swimming?

## Answer This Question

## Related Questions

- College Physics - An athlete in a competition needs to get from point A to ...
- Vector - A boy can swim with a speed of 26metre per minute in still water. Be ...
- Physics I - A person is attempting to swim directly across a river. They are ...
- physics - A swimmer heads directly across a river, swimming at 1.10 m/s relative...
- Physics - A swimmer heads directly across a river, swimming at 1.10 m/s relative...
- Physics - A swimmer heads directly across a river, swimming at 1.9 m/s relative ...
- physics - A swimmer heads directly across a river, swimming at 1.2 m/s relative ...
- Physics Dynamics - Swimming at 2.00 m/s relative to still water, a swimmer heads...
- Physics_Vectors - You can swim at a speed v relative to the water. You are ...
- physics - A swimmer heads directly across a river, swimming at 1.72 m/s ...

More Related Questions