Newtons Laws of Motion

Interactions

-An interaction occurs between 2 and only 2 objects

-An object can have any # of interactions

Force: Push/ Pull

Newtons 1st Law

“A body at rest remains at rest and a body in uniform motion remains in motion unless acted upon by an outside force”

A body’s natural state is one of constant velocity and only changes when affected by a non- zero net force.

DID YOU KNOW…. Your body can detect acceleration but not velocity

Newtons 2nd Law

“The acceleration of an object is directly related to the force applied to the object and inversely related to the mass of the object.”

(Sum of forces = Mass x Acceleration)

F= m x a

Newtons 3rd Law

“action/reaction”

“an applied force by an object is experimented in return by the object applying the force.”

Interactions go both ways!

Free body diagram: represents forces acting ON an object

Mass: Measure of inertia

Weight: Gravitational Force

Law of gravitation

“A gravitational force exists between ANY two objects with mass regardless of their location. The force only weakens over great distances, but never truly vanishes.”