How could the speed and direction of motion of an object be changed?
A) By increasing an object's inertia
B) By decreasing an object's inertia
C) By unbalanced forces acting on the object
D) By balanced forces acting on the object

C) By unbalanced forces acting on the object

Explanation:

Unbalanced forces can cause an object to change its motion.

If an object is at rest and an unbalanced force pushes or pulls the object, it will move. Unbalanced forces can also change the speed or direction of an object that is already in motion

the transfer of energy between two molecules spaced just nanometers apart plays a key role in many technologies, including photovoltaics, quantum information systems, lighting, and sensors, as well as in biophysics to measure nanometer distances and in photosynthesis. but an open question in this area is what effect, if any, the surrounding photonic environment has on this nanoscale energy transfer. by designing and performing a carefully controlled experiment to answer this question, scientists have settled the debate and found clues to improving the efficiency of many of the technologies that rely on this process.

explanation:

the answer to your question is tooth decay.