What Is Billiards: What A Mistake!
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The most obvious major drawback with this method is that right now there aren't even theories as to how you could possibly build rocket engines of the sort proposed here. The major problem here is figuring out how to pick up big pieces of continental plate without breaking them. Another, more sophisticated, problem is that the Earth is constantly spinning. No more having to go outside for your bunned beef! Suppose that they all jumped ten metres in the air (a huge overestimate, fifty centimetres is more likely and probably much less). Moving the Sun is about 6 orders of magnitude more difficult than moving the Earth but the Sun is continuously emitting energy which can be productively harnessed for this purpose. Alternatively, as the Earth's angular kinetic energy is negligible compared to its orbital kinetic energy, you might consider diverting a relatively small amount of resources to simply stopping the Earth from spinning at all, before beginning the main project. Maybe you want to destroy it: a significant number of methods for destroying the Earth involve moving it by some substantial amount. In Pool, the number of balls in a full set of pool balls varies depending on the type of the game, but a full set includes sixteen balls, each 2 1/4 inches in diameter: eight solid color balls numbered one to eight, seven balls with a color stripe numbered nine to fifteen, and a solid white ‘cue’ ball.
Note that the Earth does not and will not behave like a solid, rigid billiard ball under such huge impacts as these. The principle here is much the same, with the railguns behaving somewhat like discretized versions of thrusters, providing instantaneous changes in velocity as opposed to sustained steady change. Better, you could use many, many asteroids one after the other in a steady stream, and cut down the total time significantly. If there was some way to electrically charge the Earth, by dumping lots of identically charged particles onto the Earth or just ionizing particles already on Earth - a large amber rod might perhaps be in order - then we could use magnetic fields to drive the planet in the direction we wanted it to go. Rather than simply bouncing off, the object destroyed much of both itself and Earth, causing a VAST spray of matter to be hurled off from the impact point; this matter coagulated into what is now the Moon. Direct matter propulsion. Same method as above, just using gigantic mass drivers/railguns to fire huge quantities of matter away from Earth, instead of a rocket exhaust.
Drawbacks: as above, the momentum change you get is minuscule because you have to subtract off the 11km/s needed to launch the material upwards forever at all. Have fun with your new themed restaurants, nightclubs and vacation spots! You could build an engine at either pole and this wouldn't have any effect, but anywhere else and the constantly changing angle of thrust will cause the Earth to behave somewhat like a loose Catherine Wheel-type firework. Although I don't usually like hacking stuff to get it for free, I think the clothes are a noble exception. Basically, the point here is that modelling impacts like these is a tricky business. Two podiums using the skins from the HP costume trunks, I had these bad boys on TSR in the old days, but now I've placed them here for your downloading pleasure! Snooker is played using twenty-two balls, one of which is the striker ball, which is white. Billiards, on the other hand, uses only three balls: one each of white, yellow, and red, with the white and yellow serving as strikers. Sorry the screenies aren't in-game, and I'm even one of those people who's never had the downtown-lag, but I'm still not going there just to decorate.
Maybe the Sun is going Red Giant and you miss the days when lead didn't melt in direct sunlight. Solar sail method. I can't honestly add much to that article except to say that to move the Earth substantially, the sail used is going to have to be pretty big. They must have gotten some underwear at some point in their lives. I've put up the roman sims link because the maxis male togas have sneakers on 'em. A potion vending machine, all eight color-coded potions from the chem set for your Sims' beverage needs! The reigning U.S. amateur champion, who is turning pro, scored his third 72 of the week in the final round and tied for 21st and at five over. And lastly, suppose that they all jumped at precisely the same instant, which of course they will not, what is billiards seeing as the time difference between the fastest watch and the slowest will likely be over five minutes. Getting everybody in the world to jump at the same time. That's a trillion times heavier than all of humanity.