push or pull one body exerts on another
force
object moving keeps moving
newtons first law
tendancy of an object to resist any change in motion
interia
combination of all forces that act on an object
bet force
every object exerts a force on every other object felt as a pull
gravity
measure of force of gravity on an objects mass
weight
to every action there is a reaction
newtons 3rd law
mass of the move
movement
anything thrown or shot through air
projectile
force acting toward the center
centripetal force
opposes motion between two surfaces
friction
resists getting an object moving
static friction
resist keeping an object moving
kinetic friction