Section 13-3Section 13-3

Newton’s Law’s of MotionNewton’s Law’s of Motion

Newton’s 1Newton’s 1stst Law Law Object in motion tends to stay in motionObject in motion tends to stay in motion

or…or…

Object at rest tends to stay at restObject at rest tends to stay at rest

… …UnlessUnless acted upon by outside forces. acted upon by outside forces.

InertiaInertia Definition – property of Definition – property of matter that resists matter that resists changes in motionchanges in motion

Newton’s 2Newton’s 2ndnd Law Law Relates force, mass, and Relates force, mass, and acceleration.acceleration. Force = mass x accelerationForce = mass x acceleration

F = m x a m = F

a

a = F

m

Newton’s 3Newton’s 3rdrd Law Law For every action, there is an For every action, there is an equal and opposite reaction.equal and opposite reaction. ExampleExample: balloon car, rocket: balloon car, rocket