Explanation:
Because of two reasons. First, the effects of air drag are often small when dealing with falling balls and rolling carts (a staple of intro physics labs). Second, calculating the motion of an object with air resistance is really difficult, because the drag force increases with velocity—it's non-constant. The normal equations in your physics course are created with the assumption of constant acceleration and constant forces.
Answer:
it is air resistance and gravity
Explanation:
the gravity is pulling it down towards the ground, and the air resistance it in a way rejecting the paper filter because it is so light, that is why is you drop one it will look like is is moving to different spaces on the ground
