Acoin which is tossed straight up into the air. after it is released it moves upward, reaches its highest point and falls back down again. air resistance can be neglected. what force acts upon the coin when it is at its highest point?

a. force acting up and increasing
b. force acting up and constant
c. force acting down and decreasing
d. force of zero
e. force acting down and increasing
f. force acting down and constant
g. force acting up and decreasin

Assume that two of the electrons at the negative terminal have attached themselves to a nearby neutral atom. there is now a negative ion with a charge -2e at this terminal. what are the electric potential and electric potential energy of the negative ion relative to the electron? the electric potential and the electric potential energy are both twice as much. the electric potential is twice as much and the electric potential energy is the same. the electric potential is the same and the electric potential energy is twice as much. the electric potential and the electric potential energy are both the same. the electric potential is the same and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron. the electric potential is twice as much and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron.