A 30-Kg Block Slides on a Rough Horizontal Surface

Multiple Choice

A 3.0-kg block slides on a rough horizontal surface. A force of 8.0 N acting parallel to the surface is applied to the block. The coefficient of kinetic friction between the block and the surface is 0.15. What is the magnitude of the block's acceleration?

A) 1.9 m/s2
B) 1.2 m/s2
C) 2.3 m/s2
D) 1.5 m/s2
E) 2.9 m/s2