Whenever a body is in motion there is always gravity to oppose the motion?

Answer 1

In some cases, there is friction.

But in deep space, a body in motion stays in motion. There is lots of oxygen missing 5 electrons, and it can't even "cool down" enough to catch them, even with that strong positive charge..

Answer 2

No. Gravity is a vector property of an object(tensor is more appropriate word). According to general relativity one can move either in uniformly accelerating motion throughout the space, or be exposed to a gravitational field and one can make no difference. In other words if you are in a chamber without seeing anything outside you can be exposed to the two. So, as the question requires, if you are moving towards the source of the gravitational field(star or a planet) your motion will be accelerating and if your are moving away your motion will be deceleration(presume that your own acceleration is constant). So the arrow of the gravitational field is always pointing INTO the source of that field. In the contrary if you are a charged particle with sign '+' and the field is also with '+' sign, the arrow of the force will point outwards of the centre of the field, in other words gravity is always an attractive force.

Answer 3

Gravity is a force that acts on all objects with mass, regardless of whether they are in motion or at rest. It does not necessarily oppose motion; instead, it influences the trajectory and acceleration of objects in motion.

Answer 4

No. If the body is moving downward, then gravity is increasing the speed, i.e. "helping" it.