Does every moving body possess kinetic energy? Does every stationary body possess potential energy?

Answer 1

Kinetic Energy (KE) is calculated as,
KE = 1/2 m*v^2
where m is the object's mass, and v is the object's velocity.

It is assumed that the velocity (and thus KE) is calculated with respect to one's own reference frame as there are no absolute velocities in the universe.
Thus, a moving object does contain KE.

There are many types of Potential Energy. There is gravitational PE, Electrical PE, Chemical PE, Elastic PE, ....
So it is very likely for an object to posses at least one type of PE, but at the same time, it is not required (at least in theory).
Potential Energy is measured with respect to some kind of "Ground" or base on which the object has Potential over...if the object theoretically were the base, it would have zero potential.
I would not go so far to make the statement that every stationary object has Potential Energy, but if you looked hard enough and considered various types of PE, you might be able to find something in most cases.

Answer 2

Yes

Answer 3

Yes, everything that moves possesses kinetic energy. Every body (moving or still) in a conservative force field possesses potential energy. Gravity is such a field, so everything under the influence of gravity has potential energy. It may be zero depending on from where you measure your PE. But it will have some potential energy as a result of its position in the force field.

Answer 4

Yes.

Answer 5

Yes and yes

Answer 6

yes

Answer 7

yes