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Forces (Work (a scalar quantity (Positive if there is same direction,…
Forces
Newton's Laws
First Law
State of object doesn't change, as net force is zero
Friction slows objects down
Aka inertia, tendency of an object to resist motion
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Newton's Laws
Second Law
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Mass is a concept of inertia; weight is the force of gravity
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Weight=acceleration due to gravity*mass
Newton's Laws
Third Law
Motion
When one object exerts force on an object, it will exert an equal and opposite force.
Cause action and Reaction forces
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Work
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a scalar quantity
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Formula= force*distance
Kinetic Energy
K.E. = 1/2 m v²
- means work on system - means work in system
Potential Energy
Energy by position
Force of gravity makes potential turn into kinetic
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Mechanical Energy
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made of motion and position