Ben is super late to his Physics class and so he bolts up the stairs 15m and makes a right and runs down the hall 20 m to get to his class. Determine the magnitude of Ben's
displacement.
Hint: On your scratch paper, draw a diagram of your vectors. Use tip to tail method.
Draw a dotted line from where he started to where he finishes to make a triangle. Use
the Pythagorean theorem to solve and figure out the magnitude.

An atom that has fewer electrons that protons is called a positive ion.

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.

That would be the corect answer hope this

You will hear a hissing sound because of the carbon dioxide escaping the can or bottle