# P2

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What is force?
A force is is any interaction when unopposed will change the motion of an object.
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What is motion?
Motion is a change in position of an object with respect to time.
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Examples of force
Pushf/pull gravity/friction/magnetism
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Balanced forces
Are forces that act on the same object, are in opposit directions and are equal in size
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Unbalanced forces
Forces that are not opposite or equal. They cause a change in velocity (acceleration)
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What is friction?
A force that opposes motion between two surfaces
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Types of friction
static/sliding/rolling/fluid
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Newtons 1st law
An object at rest will remain at rest and an object in motion will keep moving at a constant velocity unless acted upon by unbalanced forces
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Newtons 2nd law
If more force is applied, an object will be accelerated more
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Newtons 3rd law
For every action, there is an equal and opposite reaction
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## Other cards in this set

### Card 2

What is motion?

#### Back

Motion is a change in position of an object with respect to time.

### Card 3

#### Front

Examples of force

Balanced forces

### Card 5

#### Front

Unbalanced forces