2.2 Newton’s Second Law of Motion

Force Causes Acceleration

Examples are provided to show how acceleration is directly related to force and inversely related to mass. Duration: 4:15.


The role friction plays within cases of dynamic equilibrium is highlighted. Duration: 6:58.

Free Fall

The ratio of an objects weight to mass is always the same, which explains how all freely falling objects fall with the same accelertion. Duration: 9:28.

Acceleration Less Than "g"

Hewitt uses the example of two parachutists to explain the effect of wind resistance upon a falling object. Duration: 5:52.

Newton's Second Law of Motion

The acceleration of an object is directly proportional to the net force on that object and indirectly proportional to the object's mass. Duration: 2:36.