Answer:
is always negative
Explanation:
Air resistance is a non-conservative force it opposes the motion of an object.It is a force that is always directed opposite to the displacement.
C because they are both going in a constant speed
The electron charge is equal to

. The atomic nucleus of the problem has a charge of

. The distance between the nucleus and the electron is

, so we can calculate the electrostatic (Coulomb) force between the two:


which is attractive, since the two charges have opposite sign.