Sagot :
Answer:
An object that is thrown, kicked or otherwise launched through the air is called a projectile. ... When a projectile is moving through the air, however, it is subject to the force of gravity, which causes it to move down toward Earth. It is also subject to the force of air resistance, which slows the projectile down.
Answer:
The ball moves because of the force you throw it in.
Explanation:
It just weighs slightly less than a wall (or the entire earth) so you don't need to push as much to move it. You push a ball with enough force to move by acceleration.