Physics Period 1= Amazingg

Gossip girl here taking you into the scandolous lives of the mendons physics elite.

Spotted: J getting reprimanded once again for disrupting class with talk about her love R. Come on little J some of us need to pass the midterm.

We started off the class period today with a review game of what we were discussing Tuesday for those of us who forgot it on our day off yesterday. We then discussed and took notes on PE turning into KE. We discussed how one can substitute Vi, a, and d into Vf^2=2gh and that the sum of PE and KE was constant in a drop. We then moved on to discuss the PE and KE of a falling object. We learned that there are two ways to think about it:

• loss of PE=gain of KE
• PE + KE= Constant

Mr. Wirth then demonstrated this principle with a ball bearing loop. We learned that the ball bearing will go roughly to the same height and that energy goes into friction. Next we watched a video called Physics of Fun Loves It! (that was for K Ko) After the very educational video we learned some new fun definitions. We learned that Internal Energy or Q:

• is the amphibs(total for those of you who don't know the lingo) KE & PE of all the individual atoms & molecules
• includes Chemical PE & Nuclear PE
• KE of atoms and molecules=temperature

We learned that the total (amphibs) mechanical energy is the KE and PE of the object due to it's velocity and position. Also total (amphibs) energy is E sub T= KE + PE + Q.

The next topic discussed was the Law of Conservation of Energy which is the total or amphibs of a closed system is constant:

• closed system: no energy is exchanged with surroundings
• no Q acts
• no work is done on or by system

The next topic discussed was the relationship between work and energy:

• work done= the change in PE
• work done on an object= change in total (amphibs) energy of an object

During that class period we also attempted to watch another video but it never loaded, therefore it was saved for another day.

One more thing... BAGEL COUNTDOWN 1 DAY! Lllloves it!

That's all for now, may the force of physics be with you.

You know you love me,

XOXO

Gossip Girl