Which of these objects has kinetic energy? A ball moving through the air. incorrect answer
B ball sitting on a table. incorrect answer
C ball buried underground. incorrect answer
D ball sitting on the edge of a cliff.

If a negatively charged particle is placed at rest in an electric potential field that increases in the positive x-direction, what will the particle do? a. accelerate in the positive x-direction b. remain at rest c. accelerate in the negative x-direction