What is the total distance of a student who walks 5 blocks west, 5 blocks north, 6 blocks east, and then 5 blocks south?

Explanation:

The student walks;

       5 blocks west;

       5 blocks north

       6 blocks east

       5 blocks south

Now, distance is sum of all the length of the path covered.

 Distance  = 5 blocks + 5 blocks + 6 blocks + 5 blocks = 21 blocks

The total distance travel by the student is 21 blocks.

if the forces acting on an object are unbalanced, the object will accelerate in the direction of the net force on the object.

explanation:

this is best explained by having an understanding of newton's second law, which states that f=ma. you see, when the forces are unbalanced, net force (sum of all forces) is not zero. therefore making it necessary for the object to have an acceleration in the direction of the net force.

unable to answer the rest since your question is incomplete