A block is pushed across a horizontal surface by the force shown. If the coefficient of kinetic friction between the block and the surface is 0.30, F = 20 N, ? = 30°, and M = 3.0 kg, what is the magnitude of the acceleration of the block?
a.
2.8 m/s2
b.
2.3 m/s2
c.
1.8 m/s2
d.
3.3 m/s2
e.
5.4 m/s2
c
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