Newtonian Mechanics

Newton's 1st Law

An object that is not moving is at rest and will stay at rest unless an unbalanced force acts on it

Inertia

The resistance to change in the unbalanced force

Property of the object that determines how much inertia it has

Mass

Newton’s 2nd Law

F=ma

greater force applied

greater the acceleration

lesser force applied

lesser the acceleration

Newton’s 3rd Law

Every action has an equal-opposite reaction

Forces

Must always occur in pairs

Agent

the life form that is doing the action

FBD

Free Body Diagram

fk

=muk x FN

fs

=mus x FN

Drag force

a force exerted by a fluid on an object moving through the fluid

everything surrounding the system that exerts forces on it

the external world

A force that acts on an object by touching

contact force

a force that is exerted without contact

field force

name of gravitational force acting on object

weight

expression for the weight of an object

mg

egg lab calculation steps

1. find Vf

2. use Vf as Vo to find acc

3. use force formula

Fg1 + Fg2

= FN

the constant velocity of a falling object

terminal velocity

unit of force

Newton