Definition: F=ma represents Newton's Second Law, showing that acceleration is directly proportional to force and inversely proportional to mass.

Highlight: Force and acceleration have a direct relationship, while mass and acceleration have an inverse relationship.

Vocabulary: Acceleration is measured in meters per second squared (m/s²), and force is measured in Newtons (N).

Example: The relationship between mass and inertia is direct - as mass increases, inertia increases proportionally.

Definition: Net force is the total sum of all forces acting on an object, considering both magnitude and direction.

Vocabulary: Free body diagrams are visual tools used to represent all forces acting on an object, showing both balanced and unbalanced forces.

Highlight: Newton's First Law introduces the concept of inertia, stating that objects maintain their state of motion unless acted upon by an unbalanced force.

Example: When opposing forces are present, such as a 20N force to the left and a 6N force to the right, the net force is calculated by subtraction (20N - 6N = 14N to the left).