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What happens if your drill a hole through the centre of the Earth and drop a ball into it? [|Travelling through the centre of the Earth]

[|Answer:] The ball will start accelerating at the rate of 9.8m/s2 and will continue to do so untill it reaches the centre of the earth. At the centre, the velocity of the ball will be infinitely large. Since the velocity is infinitely large at the centre, it will keep on moving towards the other side. Therefore as the ball will progress towards the other side of the hole and away from the core, its velocity will start to decrease and there will be negative acceleration at the rate of 9.8m/s2. The reason being it will be travelling in the opposite direction of the gravity. The velocity will be decreasing and will be 0m/s at the tip of the other side. If no one catches it, the ball will go back again towards the other side and the cycle will continue. It will keep on going back and forth inside the hole. =__MYTH BUSTERS - ISU__=

__[|Mythbusters Starwars][|Mythbusters Starwa]__

**__Projectile motion__**

 * __[|MIT Monkey Gun]__**

[|circular motion] [|Richard Feynman - Fun to Imagine] Facts about Special Relativity and all that fun stuff. []

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Another cool physics TED talk about how to easily solve really hard problems...check it out :) []

Also, check out some (cool, kinda funny) real life applications of physics: []

=FORCES= [|Frames of Reference and Circular Motion] (This is an old film (1960) but well worth watching)

=RELATIVITY= [|TED - Time travel] [|Relativity Explained] [|relativity] [|Brian Cox and Relativity] [|Twin Paradox] [|Train Paradox] [|ted - Einstein's Miracle Year]

[|TED - Space-Time Part 1] [|TEDX - Space-Time Part 2] =__MOMENTUM__=

__[|Physics of Car Crashes]__

__[|2-D collision applet]__ =__GRAVITY__=

__[|What is Gravity - Brian Greene]__



=SIMPLE HARMONIC MOTION=

[|Walter Lewin - Simple Harmonic Motion] =LIGHT=



[|TED Talk - Large Hadron Collider]
[|LHC explained] === [|The Globe and Mail - News Article] ===

[|The London Guardian - News Article]

 * [[image:http://imgs.xkcd.com/comics/neutrinos.png caption="Neutrinos"]] ||
 * Neutrinos ||

[|Brian Cox on Neutrino faster than light]

[|Brian Cox-Origin of the universe]


 * QUANTUM PHYSICS**

[|Brian Cox Explains Quantum Physics]

(including the double slit experiment)

[|Brian Greene on String Theory]

"We don’t serve faster-than-light neutrinos here," said the bartender. A neutrino walks into a bar.

[|What's a Higgs Boson?]

COOL IDEAS IN PHYSICS
[|Rouge Planet]

[|Time Travel]

[|Water bottle lights]

[|Building a windmill]

[|Invisibility Cloak?]

[|Slinky Physics]

[|Slinky Physics II]

[|Building robots website]

TED TALKS
[|sTEPHEN HAWKING ANSWERS BIG QUESTIONS]

[|Brian Greene and Multiple Universes]

The following is a link to video in youtube about the collapse of Tacoma Narrow's bridge. I found it interesting, amazing as well as a little disappointing. (posted by Sharara)

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Femto Photography, watching light moving at a very slow speed :D -Balthazar


 * FUN/INSPIRATIONAL**

[|Tagging Bears]

[|The Intellegence of Crows]

[|The Real Apollo 13]

[|Why You Will Never Have a Great Job]

**Neutrino Joke:**
"We don’t serve faster-than-light neutrinos here," said the bartender. A neutrino walks into a bar. [|What's a Higgs Boson?]