Potential and Kinetic
Energy Transformations
Types of Energy
Energy Formulas
Solving Equations
100
The faster an object moves, the more ______ energy it has
Kinetic Energy
100
a roller coaster reaches the top of the hill, pauses, and then rolls down the other side.
Potential --> Kinetic
100

This kind of energy can be found in planes, cars, bikes, or when you chew your food.

Mechanical

100

What is the formula for gravitational potential energy?

p=mgh

100

A 30 kg box is lifted 2.5 m into the air, how much GPE does it have? 

E=mgh     30*9.8*2.5=735 J

200
The more mass an object has, the more ______ energy
Kinetic Energy
200
burning a candle
Chemical --> heat + light
200

This types of energy can be found from a piano, the speaker of your phone, a guitar, or a tv.

sound energy

200

What is the formula kinetic energy? 

E=mv^2

200

How much kinetic energy does a 1100kg car driving 20m/s have? 

Ke=1/2(1100)(20)^2=220000J

300
This type of energy depends on an objects height or position
Gravitational Potential Energy
300
A hungry football player eating a large sandwich to use the food for energy
chemical --> mechanical
300

This type of energy is found when you charge your phone, plug in your laptop, or to keep the lights on at your home

Electrical Energy

300

What is the formula for force? 

Force= mass * acceleration

300

How much energy is stored in a 40 N/m spring that is streched 10cm? 

E=1/2kX^2

=.5*40*(0.1)^2

=0.2 J

k=40   x=10*0.01=0.1m

400
When a spring is stretched as far as it can go, it is said to have a lot of _______ energy
Potential
400
using a hot plate to boil water
electrical --> heat
400

This type of energy is found within your cells, in the food you eat, and in batteries

Chemical energy

400

What is the formula for spring constant?

K=F/x

400

When I hang a 400g mass from a spring and it streches 15 cm. What is the spring constant?

K=F/x 

2.94/0.15=19.6 N/m

F=M*A = 300*0.001=0.3g*9.8=2.94

x=15cm*0.01=0.15m

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

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

Radiant --> electrical

500

This type of energy is found in your microwave, in light, or in an xray

radiant/solar energy 

500

What is the formula for spring potential energy?

E=1/2Kx^2

500

A 0.20 kg ball is thrown in the air. When is the it is at a height of 4m, it has a speed of 5 m/s. How much Ke does it have? How much PE does it have? 

ke= 1/2 (0.2)(5)^2=2.5 J

mgh=(0.2)(9.8)(4)=7.84 J

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