Homework Help: I need help with 2 simple questions

1. Jan 14, 2004

nocturnalwun

Consider a boat that travels at 10 km/hr in still (non-moving) water. If the boat travels in a river that flows at a rate of 10 km/hr, what will be its velocity relative to the shore when it heads directly upstream (against the current)? What happens when it heads downstream (with the flow)? Explain

Suppose the boat is oriented at right angles to the water flow and begins moving. Using vector components and vector addition rules, how would you go about finding the direction in which the boat will move relative to the shore? I am interested in the process, not the numerical answer.

I have not been able to purchase the text needed for the class yet and I have an online quiz, so I am not able to figure out how to do these problems can anyone help?

2. Jan 14, 2004

chroot

Staff Emeritus
Please don't crosspost. I moved your other post to the high-school help forum.

- Warren

3. Jan 14, 2004

nocturnalwun

sorry i wasn't aware until after u did it