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A force between two objects rubbing against each other
Friction
Friction
A force between two objects rubbing against each other
The resistance of any physical object to any change in its speed or direction.
Inertia
A force that pulls objects towards Earth
Gravity
Gravity
A force that pulls objects towards Earth
What is inertia?
an object staying still or moving in one direction unless another force acts upon it
What affect does gravity have a roller coaster?
acceleration
what is acceleration?
to speed up
