Posted by **Science** on Monday, February 2, 2009 at 6:48pm.

38. A box slides down a 30.0 degree ramp with an acceleration of 1.20 m/s^2. Determine the coefficient of kinetic friction between the box and the ramp.

I have no idea how to do this with only knowing the aceleration and the angle. Please tell me how to do this.

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