# speed

Discussion in 'Physics' started by braddy, Sep 10, 2005.

Dec 29, 2004
83
0
Hey,
I need some suggestions to approach the problem:

A lifeguard standing on a tower throws a buoy to a swinner 5m from the tower. The lifeguard, positioned 3 m above the water, pulls in the rope at a speed of 1m/s.
How fast is the swinner coming to the shore when he is at 4m from the water edge?

thanks

2. ### wireless New Member

Sep 10, 2005
3
0

First, draw a diagram. It should be a triangle with 3m on one side (the height of the life guard), 4m on another side (distance the swimmner is from the edge) and
with a little geometry the hypotenuse is 5m. These lengths will give you the angles of the triangle. From here, all you need to find is the COSINE of the angle.

3. ### Brandon Senior Member

Dec 14, 2004
306
0
Since it never said the swimmer grabbed the bouy, you could say 0.

4. ### GnatWest New Member

Apr 24, 2004
4
0
there seems to be some missing info on this question based on your other posts