# Sam's Blogging Blog of Blogginess

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Physics Blogs

## The physics of not moving.

Here's a tricky one, how is there physics involved in not moving?!?!?!??!?! Impossible you say? Neigh! Gravity. The only reason it's possible to not move or be constantly accelerating is because of the downward force of gravity, caused by the rotational inertia of the earth, so as long as the earth keeps spinning, you can keep doing nothing. Pretty Sweet, right?

## The physics of breaking things.

Ever get so mad that you just want to hit something really hard, and you do, and it breaks? Well here's why it breaks! (hope this doesn't make you too angry). When you hit something, you're transferring the mechanical energy of that object to the object that you are striking. Now if the force is hefty enough (force = mass x acceleration), it will cause the weakest point in that object to give way and break... like that hole in your wall.

## The physics of falling

Yep. here it is, an easy one. Falling. First, if we keep in mind that on earth everything accelerates downward at 9.8 meters per second due to the force of gravity. So, that means for every second you are in the air, you go about ten meters per second faster than you were the previous second. For an example, you fall for 5 seconds, at the end of that five seconds you hit the ground at about 50 meters per second (or about 22 miles per hour), ouch! hope you live through that one.

## The Physics of a Drum

Drumming (and percussion in general) is a very interesting form of music making, I mean, it's the only instrument that you get to whack the crap out of! The physics behind hitting a drum, and how it produces its sound is actually quite fascinating. When you strike a drum with a drum stick (or your hand, a brush, a mallet, etc...) you actually create a physically visible pulse in the drum head, this pulse generates a sound wave that becomes amplified by pushing the air in the shell of the drum (t

## The Physics of Riding a Skateboard

Skateboarding is a very diverse extreme sport, some do it just for the ride, while others work their way up to performing tricks on their skateboards, using their feet, the friction of the skateboard, and the courage of an idiot. Since the physics involved in actual skate boarding tricks is immensely complex, in this blog I will be explaining the physics behind simply riding a skateboard. When riding a skateboard, in order to accelerate, one must create rotational energy in the wheels, by balanc

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