#### 6th Grade SCience Force and Motion

Newton's First Law

object in motion STAYS in motion.
object at rest STAYS at rest
until ACTED upon by an unbalanced force

Newton's Second Law

Force=mass x acceleration, more force causes more acceleration, more mass needs more force to accelerate

Newton's Third Law

For every action, there is an equal and opposite reaction

mass

the amount of matter in an object

inertia

tendency of an object to resist change in motion

speed

measurement of the distance an object travels in one unit of time

unbalanced force

type of force that can change an object in motion

velocity

speed in a given direction

acceleration

an increase or decrease in speed or change in direction

object in motion

when its distance from another object is changing

force

a push or pull

weight

the force gravity exerts on an object

Newton

unit used to measure force

balanced force

type of force that will not change and object in motion

net force

sum of all forces acting on an object

gravity

invisible force that pulls objects together, force that keeps us on earth

friction

force that one surface puts on another when they rub against each other