Please write neat and show your work. For this lab we will be using \"The Skate
ID: 1645154 • Letter: P
Question
Please write neat and show your work.
For this lab we will be using "The Skate Park" simulation from PhET. You can run this simulation by clicking on the following image. This will open in a new window. You need JAVA to run this. If you have trouble, after installing JAVA, try copying and pasting the following link into a new window:
http://phet.colorado.edu/sims/energy-skate-park/energy-skate-park_en.jar
------------------------------------------------
What is the total energy of the 60.0 kg skater before she starts her ride, 12 meters above the ground?
----------------------------------------------
If you throw a 2.0 kg basketball straight up in the air, at what height will the basketball have 160 J of potential energy?
Explanation / Answer
a) before starting her ride 12 m above the ground
skater has only potential energy .
there is no kinetic energy
=> total energy = KE + PE = 0 + mgh = 60*9.8*12 = 7056 J
b) PE = mgh
=> 160 = 2 * 9.8* h
=> h = 8.163 m