Show:
Potential and Kinetic
Energy Transformations
Kinetic Energy Calculations
Potential Energy Calculations
Defintions
100
The faster an object moves, the more ______ energy it has
Kinetic Energy
100

Energy Transformation: a roller coaster reaches the top of the hill, pauses, and then rolls down the other side.

Potential --> Kinetic

100

You serve a volleyball with a mass of 2.1 kg. The ball leaves your hand with a speed of 30 m/s. How much kinetic energy does it have?

945 J

100

A massively fat cat of mass 20kg is lifted 8m into the air. Calculate the potential energy.

1,568 J

100
Energy that is stored
Potential Energy
200

The more mass an object has, the more ______ energy

Kinetic OR Potential Energy

200

Energy transformation: Using a power drill

Electrical --> Mechanical (Kinetic)

200

A raging bull of mass 700kg runs at 10 m/s. How much kinetic energy does it have?

35,000 J

200

A 10kg mass is lifted to a height of 2m. What is its potential energy at this position?

196 J

200
Energy of motion
Kinetic Energy
300
This type of energy depends on an objects height or position
Gravitational Potential Energy
300

Energy Transformation: A hungry football player eating a large sandwich to use the food for energy

chemical --> mechanical

300

A 1000-kg roller coaster car that is moving with a speed of 20.0 m/s. Determine the kinetic energy.

200,000 J

300

Determine the potential energy of an object that has a mass of 15 kg and a height of 2.2 meters

323.4 J

300
Energy is defined as...
The ability to do work
400
When a spring is stretched as far as it can go, it is said to have a lot of _______ energy
Potential
400

Energy Transformation: using a hot plate to boil water

electrical --> thermal (heat)

400

A waddling armadillo of mass 500 kg moves at 5 m/s. How much kinetic energy does it have?

6,250 J

400

There is a bell at the top of a tower that is 45 m high. The bell weighs 190 kg. Determine the potential energy.

83,790 J

400

Unit we measure energy in

Joules

500
Kinetic energy depends on both ____ and ______
Mass and Velocity
500

Energy Transformation: A solar panel on the roof of a building to heat and cool the building

Radiant (light/electromagnetic) --> electrical

500

What is the kinetic energy of Nugget (Wulfert's dog) who has a mass of 4.5 kg and is running with a velocity of 1.7 m/s?

6.50 J 

500

 What is the potential energy of a 3kg ball that is on the ground?

0 J (it is on the ground!!!)

500
What is the law of conservation of energy?
Energy cannot be created or destroyed, rather, it transforms from one form to another.