types of energy? :P

 well... i found these 5 major energies which I'm going to describe. we learned about potential energy and kinetic energy already in class... so I'm not going to describe that.

Gravitational Potential Energy
 well, based on the name, i think one can already guess that this is the type of energy that gravity generates. since gravity is the forcing pushing us down, the gravitational potential energy is related to pushing the objects down. since work is done when something is lifted, the force times gravity will equal to gravitational potential energy.


Mechanical Kinetic Energy
 Well, it is actually difficult to define this one... Mechanical energy is the energy required to do work. and kinetic energy is the energy of motion. both of them combined is basically the energy required to do work such as motion. Walking and running is considered motion.

Chemical Potential Energy
This type of energy is the type of energy the food that human eats transfers into energy. the human body's acid in our stomach dissolve the food then it is transformed into Chemical Potential energy to have energy to work for the day, do the homework and finish the tests with enough energy for the next class! :)

Thermal Energy
 This type of energy is the energy which heat generates. the heat all stocked up will create energy. the amount of energy can be measured by the equation Q=MC∆T  where the amount of heat transfer (J) which is equal to mass (kg) x heat capacity (J/kg ◦C) x change in temperature (◦C).  Thermal energy can be transferred using one of these three methods: conduction, convection and radiation. 


Sound Energy   
Sound energy is caused by the vibration of the sound waves. The sound vibrations create waves of pressure which leads to compression of the sound waves. then the pressure causes the vibration to cause sound waves. but this type of energy is usually too small to cause electricity. 

the canon report

Well, first, in order to maximize the canon's shooting range, we will need it to be in a 45 degree angle. that will make the canon shoot the furthest. however, that is if there is no air resistance and wind affecting the light light canon ball we were FORCED TO USE STYROFOAM TO BUILD >:( sigh, so anyways, without wind patterns there should be no problem with the ball shooting its maximum range.

Also we use this equation: R = V²sin(2θ)/g to calculate it. We determine the value of θ to be sin(2θ) since we are assuming v and g do not change... Well, we need it to be sin 90 which means they need it to be a 45 degree angle.

Newton's problems... well not his problems but his problems to the world- ehhhh you know what i mean >:(

First of all, The 4 problems are Equilibrium, Inclines, Pulleys and Trains(not the band, actual trains :))

- They all need assumptions
For Equilibrium- No Friction and a=0
For Inclines- positive direction of motion, a=0, no resistance
For Pulleys- No friction, no resistance, 2 FBDs
For Trains- 3 FBDs, No resistance, a=0 and constant, horizontal and positive motion

Example from my notes!-(sorry about it being sideways, its the only way to take the picture :( )
Equilibrium-

 Inclines-

 

Pulleys-

 Lastly, Trains-