MONDAY DO NOW
Tell whether each of the following phase
changes absorbs or releases energy:
1. Melting
2. Freezing
3. Sublimation
• Today’s PLAN
• Describe the relationship between kinetic energy and
the mass and speed of an object.
• Describe the relationship between potential energy
and the mass and position of an object.
• Todays DO
– We will finish discussing changes of matter.
– We will compare and contrast kinetic and potential
energy.
– We will practice calculating the kinetic and
potential energy of objects.
Create your own Concept Map
with what you know about the
following words:
Energy
Kinetic energy
Force
Gravity
Potential energy
Motion
Acceleration
Define Energy:
• The ability to do work
• The ability to cause matter to move
or change
Kentucky Kingdom Needs
You!
Roller Coaster Physics
You are competing for the position of
head Engineer for the newest roller
coaster for Kentucky Kingdom.
You will be competing against other
designers…so may the best win!
Tasks for the
Competition:
• Take all notes during class
• Complete all homework sheets
• Grade of C or above on Summative Unit
Test
• Design plans for a “Functional” roller
coaster for the competition.
Energy in Roller
Coasters?
• https://www.youtube.com/watch?v=Ll
M1pIefpBM
Energy Information:
Copy this chart in your notebook.
Type of
Energy
Definition
Potential
Stored
Energy
Kinetic
Energy
of
Motion
Examples (2) Equation
(draw&label)
What is the Law of
Conservation of Energy?
• Energy cannot be created or
destroyed
• It can only only be transformed
(changed) from one form to another.
Roller Coaster Animation
• http://www.pbslearningmedia.org/res
ource/hew06.sci.phys.maf.rollercoast
er/energy-in-a-roller-coaster-ride/
Which has more potential
energy?
✔
Which has more kinetic
energy?
• If these are moving at the same
speed…
✔
KE = ½ mv2
KE = (0.5) x (mass) x (velocity)2
A 10g ball is rolling at 3m/s. The
ball has _____ energy. Calculate
it.
KE = ½ mv2
KE = (0.5) x (10g) x (3m/s)2
KE = 45 J
PE = mgh
PE = mass x gravity x height
• A 10g ball is held 2 meters from
the ground. It has _____ energy.
Calculate it.
PE = mgh
PE = 10g x 9.8 m/s2 x 2m
PE = 196 J
Tasks:
1st Finish Information Chart
2nd Complete worksheet.
-turn in to the side cart
Exit Slip: