KE
Kinetic energy is determined by ........
Mass and speed
PE is determined by an object's.......
Position
What is an example of a change in energy?
Throwing a ball in the air
Lab we did with the pendulum
Many answers
Energy cannot
be created or destroyed
Energy is......?
The ability to do work!
When dealing with KE mass is......
Directly proportional or equal
Name one type of PE
Gravitational
Elastic
What happens when the ball leaves your hand into the air?
The potential energy will decrease and kinetic energy will increase
Energy can be....
transferred from one object to another
What are the units for energy?
Joule
If mass doubles kinetic energy will......
Double
The higher the object the more.....
Gravitational PE!
At the highest point the ball will have
gravitational potential energy
A way to transfer energy is to.....
Do work on an object
The sum of PE and KE
is mechanical
If speed doubles.... Kinetic energy will ......
Quadruple
Elastic PE is determined by .....
Stretching or compressing an spring or rubber band
When the ball moves toward the ground what will happen to the energy
The PE will decrease and KE will increase
Doing work requires....
Starts with an F (use this to move an object....)
a force to act on it
Does an object have to be moving to have energy?
No!
What is the Kinetic Energy equation?
KE = 1/2mv^2
If you move a book to a lower shelf from a higher shelf the PE willlll
Decrease
Does energy go away?
No! It just transfers or transforms to another form
Can an object have both PE and KE
Yes!
Name the type of energy: holding your backpack off the ground is ....
PE