An object has an acceleration of 6.0 m/s/s. If the mass of this object were doubled (with no change in its net force), then its
new acceleration would be m/s/s.

i think the answer is b

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.

the answer is b ) square root of 5