When you know both the speed and direction of an object’s motion, you know the

When you know both the speed and direction of an object's motion, you know the velocity of the object.

an ion is a charged atom or molecule. it is charged because the number of electrons do not equal the number of protons in the atom or molecule. an atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom.

2b2t

explanation:

2b2t