Acceleration is the rate-of-change of velocity.
Average Acceleration (
elapsed in the process.
) is the ratio of the change in its velocity over the time
Whenever an object speeds up or slows down, its velocity changes size and it
Newton's First Law of Motion:
An object at rest remains at rest as long as not net force acts on it.
An object moving, with constant velocity continues to move with the same speed and in the same
direction as long as no net force acts on it.
Newton's Three Laws
The Drag Force and Terminal Speed
Air behaves like a fluid when an object is moving through it. Since, the object and fluid are
moving relative to each other and there is friction between the object