Saturday

April 18, 2015

April 18, 2015

Posted by **christine** on Thursday, January 26, 2012 at 2:33am.

- pysics -
**drwls**, Thursday, January 26, 2012 at 6:42amTo go straight across, you would have to paddle in an upstream direction with respect to the water. The velocity component across the river would then be sqrt(5^2 - 3^2) = 4 miles/h. The time to go across and back is then

T1 = 2 mile/4 mph = 0.5 hours = 30 minutes

To go 1 mile upstreeam and then down requires

T2 = 1/(5-3) + 1/(5+3) = 1/2 + 1/8 = 5/8 hr = 37.5 minutes.

**Answer this Question**

**Related Questions**

math - A kayak moves 10 miles per hour in still water. If the river current ...

algebra - joe is planning a 5 hour canoe trip. he can paddle 4 miles per hour in...

Math- Multi-step word problems - A canoe in still water travels at a rate of 10 ...

Math - Alicia went on a steamboat ride up the Mississippi River. The boat ...

math - Alicia went on a steamboat ride up the Mississippi River. The boat ...

Math - Alicia went on a steamboat ride up the Mississippi River. The boat ...

word problems - A canoe in still water travels at a rate of 12 miles per hour. ...

Math - Jared can paddle his canoe 1 mile upstream in 1 hour, but it takes only a...

PLEASE HELP MEEE!!!! - A canoe in still water travels at a rate of 12 miles per ...

Intermediate Algebra - in still water, a paddle boat averages 10 miles per hour...