Say What?
Distance divided by Time equals what?
Speed
Potential energy is energy that is ____.
Stored
What happens to an object when the amount of kinetic energy increases?
It moves faster.
When does an object gain mechanical energy?
When work is done.
Energy that cannot be made comes from what 2 changes?
Transform & Transferr
This form of kinetic energy is produced when the matter of an object vibrates.
Sound energy
Objects can hold energy because due to it's what?
Elasticity
The more kinetic energy something has, the ______ it becomes.
faster
What are the 2 forms of mechanical energy?
Potential & Kinetic
What is it called when energy passes from one object to another?
Transferring Energy
Energy is the ability to change an object or _____.
What part of a roller coaster provides the potential energy?
Cables
This provides a roller coaster with the kinetic energy it needs to move.
Gravity
Work that changes the speed of a moving object changes its what?
Kinetic energy
When passing a ball between two people, the force of your foot on the ball when passing it back causes a change in what?
Direction
What type of energy does friction cause?
heat
Potential energy makes it _______ to do work or cause change.
possible
When does a train have kinetic energy?
When it's moving.
A stretched rubber band has what?
Potential energy
When energy is changed (transformed or transferred), it cannot be what?
Destroyed
What is the unit of measurement that we use to measure energy/work?
Joules (J)
How can a ball in your hands gain more potential energy?
raise it higher
Kinetic energy is always related to _______.
Motion
An object gains kinetic energy if the work causes what?
Movement in the object
This is a change in an object's position over a time period.
Motion