KE
Kinetic energy is determined by what 2 factors
Mass and speed
PE is affected 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/the same rate
Name one type of PE
Gravitational
Elastic
What happens to energy 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/apply friction
What is an object that sways back and forth?
pendulum
If speed doubles.... Kinetic energy will ......
Quadruple
Elastic PE is determined by .....
Stretching or compressing a spring or rubber band
When a ball is dropped toward the ground what will happen to the energy in the system?
The PE will decrease and KE will increase
The sum of PE and KE
is mechanical energy
Does an object have to be moving to have energy?
No!
What is the relationship between kinetic energy and speed/velocity?
KE increases by velocity squared
If you move a book to a lower shelf from a higher shelf the PE will
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