Is this relative? HELP! - Page 2

I have heard many people ponder a question similar to this. It was, if we took all the chinese people and made them jump at the same time, when they land will the earth be thrown out of its orbit?
I think there are many articles on that, some funny, some are serious.

ya, the principles of physics we call laws are based upon unexisting conditions, they remove the reality to impose theoritical conditions to focus on curtain aspects they call principles to understand the basics so they can extend them to a general view.
The perception of the atomos evolved into elments formed from tiny particles which form moecules which form the substance of our reality. Are they real? Well we generally accept a theory based upon how well it defines the properties and accurately predicts observed results, not how realistic they are when compared to the reality of existence.
The principles of physics applies to pool tables and billards. So when we rack the balls and break, we note that the energy (force) applied to the cue is transfered to the cue ball then transfered to the poolballs racked on the table. Although we may aim the cue ball toward the opposite bank the force is applied in various degree to the racked balls of which feew would strike the rear cushion and those which do don't strike it at the (angle) direction of the applied force.
Is the physics invalid? A falling star (astroid) streaks across the night sky following the arc decent to bury itself into the earth, the force of it drives the mass deep into the crust of the earth, a crater is formed by the earth pushed aside as it impacts, etc.
In each of the observed phenomina (sp) appling physics helps us to understand their action and reactions, from asteroids turn meteors to bank shots with english applied upon the pool table, we are assured of the results even if we measure these values and calibrate them intutitively.