A 2.0-kg block slides on a rough horizontal surface. A force (magnitude P = 4.0 N) acting parallel to the surface is applied to the block. The magnitude of the block's acceleration is 1.2 m/s2. If P is increased to 5.0 N, determine the magnitude of the block's acceleration.
◦ 2.1 m/s2
◦ 2.3 m/s2
◦ 1.9 m/s2
◦ 1.7 m/s2
◦ 3.2 m/s2