1. Net Force: This is the sum of all forces acting on an object. A larger net force means a larger acceleration. This is described by Newton's Second Law of Motion: F = ma (Force equals mass times acceleration).
2. Mass: The mass of an object is a measure of its inertia, its resistance to change in motion. A larger mass means a smaller acceleration for the same force applied. Again, using Newton's Second Law, we can rearrange the formula to solve for acceleration: a = F/m (Acceleration equals Force divided by mass).
In summary:
* More force means more acceleration.
* More mass means less acceleration.