Show:
Energy
Kinetic Energy
Potential Energy
Law of Conservation of Energy and other
Energy Transformations
100
What unit is energy measured in?
Joule
100
What is Kinetic Energy?
energy in the form of motion.
100
What is potential Energy?
stored energy due to position
100
What is the law of conservation of energy?
energy cannot be created or destroyed
100

A car engine changes chemical energy (fuel) into _____ energy so the car can move.

kinetic or mechanical

200
What is the ability to cause change?
Energy
200

What is the formula for kinetic energy?

KE=1/2mv2

200
What is the formula for potential energy?
GPE= mgh
200

If a coconut falls from a tree, what happens to the TOTAL energy from start to finish.

stays the same

200

What is the transformation of a toaster making toast.

electrical to thermal

300

Other than Kinetic and Potential, name 3 other forms of energy.

electrical, mechanical, thermal, chemical, potential elastic, gravitational potential energy

300

What two factors does kinetic energy depend on?

mass and velocity

300

What two factors does potential energy depend on? Assume you are on Earth.

mass and height

300

What force transforms ME to Thermal Energy?

Friction

300

What is the transformation when a plant falls from a window?

potenial to kinetic

400
What is kinetic energy plus potential energy?
Mechanical Energy
400
Kinetic energy of an object increases as its _________ increases.
velocity
400
As height increases, what happens to potential energy?
increases
400

Food is an example of what? 

Chemical energy

400

Plants convert light energy from the sun into _______ energy.

chemical

500

Think back to our pendulum simulation. When friction is ZERO what energy transformation is taking place? 

Gravitational Potential Energy to Kinetic Energy

500

Calculate the Kinetic energy of a 30 kg cart moving at a speed of 6 m/s.

540J

500
T/F Two copies of the same book are in a book case. ONe book is twice as high as the other. They have the same potential energy.
false
500

CHALLENGE: If a ball had a kinetic energy of 1500 J and a velocity of 4 m/s, what is its mass?

187.5 kg

500

What is the transformation of a kicker sending a football through a goalpost? (think about the kickers body only, not the action with the ball)

chemical to mechanical