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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. When the balls strike each other or the table walls, their velocity will change. 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. The major problem here is figuring out how to pick up big pieces of continental plate without breaking them. 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. Build an enormous lightweight "hat" for the Sun, which catches the Sun's rays. This structure would not be in orbit around the Sun, but static, remaining aloft using the radiation pressure of catching and reflecting solar energy.

It will have transferred all of its kinetic energy to the other ball, which will move forward with the same velocity that the cue ball had before the collision. Which means the distance the Earth moves when everybody jumps will be one trillionth of the distance that all the people jumped: that is to say, 10-11 metres, or about half the radius of a hydrogen atom. It is possible to use a solar sail to steer the Earth into the Sun. How to use Billiards in Chichewa and how to say Billiards in Chichewa? The objective of a billiards game is to score a fixed amount of points, or to score the highest number of points within a set time limit that is agreed upon at the beginning of the game. Just use it to tack against the direction in which the Earth is travelling, gradually slowing its orbital velocity and increasing the orbit's eccentricity, until the orbit passes within the Roche limit where the Earth is torn apart by tidal forces. 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.

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. Billiards method. Clonk the Earth with something big and heavy, causing it to alter course. 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. 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. You could reuse the same asteroid again and again, looping it around a few gas giants and back to gain lots more kinetic energy from those gas giants in the same way that Earth just gained velocity from the rock. 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. Belgium. Design them carefully so that when used the rocket engines do not actually just propel themselves through the ground and into Earth where they become useless - you may need to periodically dig them out again after several thousand years' continued thrusting, what is billiards or else just build new ones over the top.

Note that the Earth does not and will not behave like a solid, rigid billiard ball under such huge impacts as these. You must string to determine who will start the match, which can be based on an imaginary line (head string) or the number of wins (scoring string). Baulk is the rectangular area of the table that is bordered by the baulk line and the three cushions at the head of the table. If only the object ball interferes, it is placed on the head spot or the center spot if the cue ball blocks the head spot. A ball is said to be placed on a line or spot when its center is placed directly over that line or spot. To score points, which are known as counts, you need to bounce the cue ball off the other two balls. Why were billiard balls initially made of ivory?