Ashopper pushes a 7.32 kg grocery cart
with a 14.7 n force directed at
-32.7° below the horizontal.
what is the normal force on the cart?

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.

we need to know the time interval during which the force acts. impulse of force = momentum change