A diver makes 1.5 revolutions on the way from a 9.2-m-high platform to the water. Assuming zero initial vertical velocity, find the diver's average angular velocity during a dive.

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.

that would be because of both gravity and friction. so     c