Question

mechanical energy is ________.
a. a type of potential energy that is stored in the nucleus of an atom
b. the sum of an object’s potential and
c. a type of kinetic energy that results from the motion of charged particles
d. the tota

polling question
mechanical energy is ________.
a. a type of potential energy that is stored in the nucleus of an
b. the sum of an object’s potential and kinetic energy
c. a type of kinetic energy that results from the position or
d. the total kinetic energy of an object’s particles
normal poll - the presenter can see your answer.

Explanation:

• Option A describes nuclear energy (stored in atomic nucleus), not mechanical energy.
• Option B: Mechanical energy is defined as the sum of an object’s potential energy (due to position/condition) and kinetic energy (due to motion). This matches the definition.
• Option C: Kinetic energy from charged particle motion is electrical energy, not mechanical.
• Option D: Total kinetic energy of an object’s particles is thermal energy, not mechanical.

Answer:

B. the sum of an object’s potential and kinetic energy