MONDAY DO NOWTell whether each of the following phase changes absorbs or releases energy:1.Melting2.Freezing3.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 Potential energyKinetic energy MotionForce AccelerationGravity

Define Energy:• The ability to do work• The ability to cause matter to

move or change

Kentucky Kingdom Needs You!

Roller Coaster PhysicsYou 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=LlM1pIefpBM

Energy Information:Copy this chart in your notebook.Type of Energy

Definition Examples (2)(draw&label)

Equation

PotentialKinetic

StoredEnergyEnergy of Motion

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/resource/hew06.sci.phys.maf.rollercoaster/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 mv2KE = (0.5) x (10g) x (3m/s)2

KE = 45 J

PE = mghPE = mass x gravity x

height• A 10g ball is held 2 meters

from the ground. It has _____ energy. Calculate it.

PE = mghPE = 10g x 9.8 m/s2 x 2mPE = 196 J

Tasks:1st Finish Information Chart

2nd Complete worksheet.-turn in to the side cart

Exit Slip: