Potential and Kinetic Energy Ms. Khericha and Ms. Rowland

Potential and Kinetic Potential and Kinetic EnergyEnergy

Ms. Khericha and Ms. RowlandMs. Khericha and Ms. Rowland

Pendulum Activity Pendulum Activity Hold the string with one hand. Hold the string with one hand. Pull the washer slightly to the side, and let go of Pull the washer slightly to the side, and let go of

the mass without pushing it. Watch it swing at the mass without pushing it. Watch it swing at least 10 timesleast 10 timesNote how fast and how high the pendulum swingsNote how fast and how high the pendulum swings

Repeat Step 2, but pull the mass farther to the Repeat Step 2, but pull the mass farther to the sidesideNote how fast and how high the pendulumNote how fast and how high the pendulum

Answer the questions- you will have 10 minutes Answer the questions- you will have 10 minutes

Rubber Bands?Rubber Bands?

Do you think that these rubber bands have Do you think that these rubber bands have any energy?any energy?

Rubber BandsRubber Bands

What about this rubber band?What about this rubber band?

Potential EnergyPotential Energy

What is potential energy?What is potential energy?- Potential energy is stored energy. Potential energy is stored energy. - This means that whenever an object is in a This means that whenever an object is in a

position other than equilibrium, it has the position other than equilibrium, it has the potential, or possibility to use energy!potential, or possibility to use energy!

- Some types of potential energy- elastic Some types of potential energy- elastic and gravitational and gravitational

Examples of Potential EnergyExamples of Potential Energy

This rubber band does not have potential This rubber band does not have potential energy in this position. It is at equilibrium. energy in this position. It is at equilibrium.


This rubber band does have potential This rubber band does have potential energy in this position. What will happen if energy in this position. What will happen if he lets go?he lets go?


What about these balls? In this position, What about these balls? In this position, do these balls have potential energy?do these balls have potential energy?


How about this ball? What about the How about this ball? What about the arrow? arrow?

Kinetic EnergyKinetic Energy

So, what happens when an object moves So, what happens when an object moves from a potential energy position?from a potential energy position?


It gains motion! It gains motion!


Kinetic energy simply is the energy of Kinetic energy simply is the energy of motion. Anything that is moving has motion. Anything that is moving has kinetic energy!kinetic energy!


You can know how much kinetic energy You can know how much kinetic energy an object has if you know two things:an object has if you know two things:

1.1. MassMass

2.2. Velocity (speed)Velocity (speed)

ReviewReview

Potential energy is the energy that is Potential energy is the energy that is stored within an object that is not in motion stored within an object that is not in motion but is capable of being active.but is capable of being active.

Kinetic energy is the energy of motion.Kinetic energy is the energy of motion.

ReviewReview

Can you identify whether the object has Can you identify whether the object has potential energy or kinetic energy?potential energy or kinetic energy?

Lets Get movingLets Get moving

You will work independently to complete You will work independently to complete the assignmentthe assignment

You will have till the last 5 minutes of class You will have till the last 5 minutes of class to finish the activity and clean up your area to finish the activity and clean up your area (throw away trash, put scissors/glue away)(throw away trash, put scissors/glue away)

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Potential and Kinetic Energy Ms. Khericha and Ms. Rowland