Vocabulary 1
a push or pull
force
Speed and direction
velocity
When does an object have kinetic energy?
When it is moving
What are newtons measuring?
force
Besides friction, what acts on something that is moving to slow and stop it?
gravity
how fast or slow something is moving. Found by dividing the distance by time
speed
A change in speed or direction
acceleration
On a roller coaster, when do the cars have the most potential energy?
At the top of the biggest hill
What is miles per hour measuring?
speed
When an unbalanced force acts on an object, what happens?
It moves.
The tendency for an object to stay in its current state of motion
inertia
The force between two objects, such as the Earth and a person
gravity
On a rollercoaster, when do the cars have the most kinetic energy?
At the bottom of the biggest hill
What are joules measuring?
energy
Mass always stays the same, but weight changes based on what?
location
energy when something is moving
kinetic energy
stored energy when something is sitting still
potential energy
How can you increase an object's potential energy?
Raise it higher
What is meters/second/second measuring?
acceleration
When does something NOT have energy?
Never
the resisting force against motion
friction
the ability to do work
energy
How can you increase an object's kinetic energy?
Increase its mass or speed
What is kilometers/hour east measuring?
velocity
What kind of force can happen without objects touching? (like gravity or magnetism)
noncontact force