Coulomb's law: A positive point charge Q is fixed on a very large horizontal frictionless tabletop. A second positive point charge q is released from rest near the stationary charge and is free to move. Which statement best describes the motion of q after it is released?
A) Its speed will be greatest just after it is released.
B) Its acceleration is zero just after it is released.
C) As it moves farther and farther from Q, its acceleration will keep increasing.
D) As it moves farther and farther from Q, its speed will decrease.
E) As it moves farther and farther from Q, its speed will keep increasing.

Question

Quizplus · Accepted Answer

The force between the charges decreases as q moves away from Q, but q will continue to accelerate away from Q, causing its speed to increase as it moves farther away.

Coulomb's Law: a Positive Point Charge Q Is Fixed on a Very