Acar is traveling at 20 m/s and is brought to the rest by applying brakes over a. of 4 second what is an average acceleration over the time interval

When electrons are removed from the outermost shell of a calcium atom, the atom becomes an anion that has a larger radius than the atom. an anion that has a smaller radius than the atom. a cation that has a larger radius than the atom. a cation that has a smaller radius than the atom.