Supposing you were in space ... in a weightless environment, would it require a force to set an object in motion? Explain ...

it wouldn't, right? because it's in space, no gravity to pull it, or act upon it ... so it would just float?

Yes, a force is require to set an object in motion.

Explanation:

In space, even if you feel weightless, you are subject to motion. If you are orbiting the Earth, you are under the constant influence of Earth having a free-fall acceleration equal to the centripetal acceleration. To disturb this orbital motion, an external force is required. According to Newton's laws of motion, a force is required to change the state of the rest of a body or to change the velocity or direction if it is moving with uniform velocity along a straight line. Whenever there is a change in velocity or direction of a body there is a force acting on it.