Question

help?? When vibrational motion in an object increases, which is a true statement?

A.
Kinetic energy and temperature decrease; thermal energy increases.

B.
Kinetic energy, temperature, and thermal energy decrease.

C.
Kinetic energy and temperature increase; thermal energy decreases.

D.
Kinetic energy, temperature, and thermal energy increase.

i think its D, but im not sure.

Answer 1

The answer should be "D", Because the vibration would heat up the object causeing the temperature and thermal energy to increase. Since the object is moving (Vibration), then it is using kinetic energy, so that also increases.