Posted by **na** on Saturday, September 11, 2010 at 11:49pm.

A diver springs upward from a board that is three meters above the water. At the instant she contacts the water her speed is 9.6 m/s and her body makes an angle of 84 degrees with respect to the horizontal surface of the water .

- physics -
**drwls**, Sunday, September 12, 2010 at 2:29am
I'd score it 8 out of 10, but don't know the degree of difficulty.

By the way, what is your question?

- physics -
**Anonymous**, Tuesday, September 16, 2014 at 6:05am
In a two-dimensional tug-of-war, Alex, Betty, and Charles pull horizontally on an automobile tire at the angles shown in the picture. The tire remains stationary in spite of the three pulls. Alex pulls with force of magnitude 213 N, and Charles pulls with force of magnitude 178 N. Note that the direction of is not given. What is the magnitude of Betty's force if Charles pulls in (a) the direction drawn in the picture or (b) the other possible direction for equilibrium?

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