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April 20, 2014

April 20, 2014

Posted by **help** on Sunday, November 21, 2010 at 10:53pm.

What is the angle (in degrees) of the initial velocity, measured counter-clockwise from the +x-axis?

I got 38.04 degrees but isn't the right answer

- physics -
**drwls**, Monday, November 22, 2010 at 12:32amSince they are asking about initial conditions only, the force makes no difference

Vo,x = -0.46 m/s

Vo,y = 0.36 m/s

The Vo vector is aimed in the second quadrant, at an angle of arctan36/46 = 38 degrees to the -x axis. That would be an angle of 142 degrees from the +x axis, measured counterclockwise.

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