An unknown solution has a ph of 7. how would you classify this solution? acidic basic neutral there is not enough information to answer the question.

It would be a neutral,

The acidity of water is 7 as well

There's exactly enough information to answer the question! xD
pH stands for power of Hydrogen. It represents the proportion of Hydrogen ions in your body. the values of the pH ranges from 1 to 14.
When the pH = 7, the solution is considered as neutral. When the pH > 7, the solution is considered as Basic. And when the pH < 7, the solution is considered as Acidic.
By hypothesis, we know nothing about the solution except of its pH which is 7. Which means that this is a neutral solution.

Hope this Helps! :)

Is a  vector quantity  that refers to "the rate at which an object changes its position." imagine a person moving rapidly - one step forward and one step back - always returning to the original starting position. while this might result in a frenzy of activity, it would result in a zero velocity. because the person always returns to the original position, the motion would never result in a change in position. since velocity is defined as the rate at which the position changes, this motion results in zero velocity. if a person in motion wishes to maximize their velocity, then that person must make every effort to maximize the amount that they are displaced from their original position. every step must go into moving that person further from where he or she started. for certain, the person should never change directions and begin to return to the starting position.