Newton's second law states that if a net force acts on an object, it will accelerate in the direction of that net force. The acceleration of an object is directly proportional to the force applied on it; that is, a small amount of force will cause a small acceleration. Furthermore, the acceleration of an object is inversely proportional to its mass; that is, a big object will have a small acceleration and a small object will have a large acceleration, given that the same amount of force is applied. That is summarized in the following equation:
[tex]F_{net} = ma[/tex]
where [tex]F_{net} [/tex] is the net force applied on an object, m is its mass and a is its acceleration.
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