A 3.5 kg wooden block is pulled with 12.5 N of force across a rough surface. If the force of friction is 4.8 N, find the net force and the acceleration of the block. (Start by drawing a force diagram.)

F = 7.7 [N]

a = 2.2 [m/s²]

Explanation:

In the attached picture we see the forces on the wooden block, the total force is obtained by means of the sum of the pushforce and the friction force.

Now we must apply Newton's second law, which tells us that the total force on the body must be equal to the product of mass by acceleration.

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