The Manga Guide to Relativity

22 Chapter 1

And in the 17th century,

Newton consolidated

various laws related

to motion into "Thr

Laws of Motion."

These formed the

basis for Newtonian

mechanics.

Newton's Thr Laws of Motion

First Law: Law of inertia

Second Law: Equation of motion (F=ma)

Third Law: Law of action and reaction

The fact that Newton's

thr laws of motion

hold in a inertial

frames is the Galilean

principle of relativity.

Although these rules

were formulated long

ago, we can sti use

them today in most

circumstances.

Huh?

What do you mean by

most circumstances?

That's a gd

question,

Minagi.

There is a

phenomenon that

caot be explained

by Newtonian

mechanics.

It's the

spd of

light!

First

Newton's Thr La

First Law: Law o

Second Law: Eq

Third Law: Law o

RELATIVITY_03.indb 22 3/15/2011 3:26:06 PM