If an object has zero velocity, will the object be in motion? Why or why not?

Yes it can be in motion

Explanation:

Even though it stopped, i.e the velocity is zero, the acceleration would be the acceleration due to gravity, 9.8 m/s. Acceleration can only be calculated over a period of time. This means, even if the motion of the body changes after infinitesimally small period of time, the object will have an acceleration.

d.) circle motion requires a force to give it a centripetal acceleration.

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

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