Posted by Anonymous on Sunday, November 6, 2011 at 6:23am.
First determine the acceleration, a.
The net force down the slope equals M*a. The net force is the gravity component down the slope minus the friction force.
M*g*sin30 - M*g*cos30*0.15 = M*a
M cancels out, and so
a = g*(sinA -0.15 cosA) = 0.37 g
= 3.6 m/s^2
Then use V = a*t for the velocity at time t.
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