motion
gravity
Inertia
Friction
Vocab
100
speed and direction
What is velocity?
100
gravity
What pulls you to the earth?
100
An object will stay in motion until acted on by an outside force.
What is The first law of motion?
100
A force that acts between two surfaces that are touching each other.
What is Friction?
100
What is a force?
A push or a pull.
200
R=D/T
What is rate?
200
gravity
What pulls a marble down a ramp?
200
An object will stay at rest until acted on by an outside force.
What is The second law of motion?
200
We would slide across the room and wouldn't be able to stop.
If we didn't have friction?
200
An objects change in velocituy divided by the time it takes to make it happen.
What is acceleration?
300
change in direction and position
What is motion?
300
air resistance
What slows you down when you are sky diving?
300
Unless a force is acting on it.
What is A force will not accelerate unless?
300
To make things move easily.
People reduce from friction because?
300
Forces that dont cancel each other out.
What is an unbalanced force?
400
stationary objects used to find a position change
What is a Frame of Reference?
400
the gravitational pull isn't strong enough to attract us
why don't we get attracted to objects if they have a gravitational pull?
400
The tendency of matter to resist a change in stae of motion.
What is Inertia?
400
Between rough surfaces or smooth surfaces.
Where is there more friction?
500
how can you tell a marble is moving
using a Frame of Reference?
500
air resistance and gravity
what 2 forces act on a baseball when you throw it
500
Because inertia is acting on you.
You fly out of the windshield when you aren't wearing your seat belt?
500
So we don't fall down.
Sometimes we need more friction because?
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