Saturday, December 11, 2010
Energy!
What is energy? Energy is the capacity to do work. There are many different types of energy, the simplest one being mechanical kinetic energy, which is just movement. There is also things like light energy, thermal energy, chemical energy, sound energy, nuclear energy, and elastic energy.
Saturday, December 4, 2010
Cannons!
BOOM!
We made cannons in class. (:
In order to maximize the range of the cannon, the angle needs to be 45.
We learned while doing projectile motion that the range of the projectile v2sin2(angle)/g.
Since sin90 is 1, and we want everything maximized, in order to get 1, the angle needs to be 45 because sin2(45) = sin90. (:
Even though that isn't a cannon, it is a projectile. (:
We made cannons in class. (:
In order to maximize the range of the cannon, the angle needs to be 45.
We learned while doing projectile motion that the range of the projectile v2sin2(angle)/g.
Since sin90 is 1, and we want everything maximized, in order to get 1, the angle needs to be 45 because sin2(45) = sin90. (:
Even though that isn't a cannon, it is a projectile. (:
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