Newtons Laws of Motion

Kinematics

the study of HOW objects move

Dynamics

The study of WHY objects move the way they do

Force (f)

a push or pull

Newton

Units of force

Net Force

Combination or sum of all forces acting on an objects

equilibrium

state of balance

weight

the effect of gravity on an object

mass

the quantity of matter in an object

volume

the amount of space taken up by an object

center of mass

point at the center of an object’s mass distribution

center of gravity

point at the center of an object’s weight distribution where gravity is considered to act

normal force

force perpendicular to the surface of contact

free body diagram

a generic picture used all of the forces acting on an object.

tension

internal force due to supporting an object; usually exists in ropes

inertia

the reluctance of any body to change its state of motion

interaction

a mutual action between onjects where each obkect exerts an equal and oppsite force on the other.

static friction

the force that opposes the start of motion

sliding friction

the opposing force between surfaces in motion; called kinetic friction

air resistence

drag; force of friction acting on an object moving through air

terminal velocity

speed at which the acc of a falling object terminates bc friction balances the wheight

friction

force that acts between materials that touch

coefficient of friction

constant that depends on the two surfaces in contact, no units

nEWTONS FIRST LAW

An object at rest remains at rest, and an object in motion remains in motion at constant speed and in a straight line unless acted on by an unbalanced force

newtons second law

the acceleration of an object is directly related to the net force and inversely related to its mass.- Acceleration of an object depends on two things, force and mass.

newtons third law

for every action, there is an equal and opposite reaction. So, if object A acts a force upon object B, then object B will exert an opposite yet equal force upon object A.