Presentation on theme: "Chapter 4 Newton’s First Law of Motion: Inertia. Newton’s First Law - Inertia In Fancy Terms: Every object continues in a state of rest, or of motion."— Presentation transcript:
Newton’s First Law - Inertia In Fancy Terms: Every object continues in a state of rest, or of motion in a straight line at constant speed, unless it is compelled to change that state by forces exerted upon it.
In Plain English: Objects in motion tend to stay in motion. Objects at rest tend to stay at rest.
An objects acceleration is directly proportional to the net force Acceleration ~ net force
Mass resists acceleration Acceleration ~ 1/mass (inversely proportional)
Newton’s 2 nd Law: The acceleration produced by a net force on an object is directly proportional to the magnitude of the net force, is in the same direction as the net force, and is inversely proportional to the mass of the object.
In other words : Acceleration = net force/mass a= F/m
Net Force Unit will always be Newtons. 1 N = kg*m/s 2
Free Body Diagram Definition: Diagram showing all the forces acting on an object.