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Forces (Lesson 1 (Inertia (the resistance an object has to a change in its…
Forces
Lesson 1
Newtons First Law
An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
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Lesson 2
Force
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Friction - force exerted by a surface as an object moves across it or makes an effort to move across it.
Air Resistance - special type of frictional force that acts upon objects as they travel through the air
Tension - force that is transmitted through a string, rope, cable or wire when it is pulled tight by forces acting from opposite ends
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Contact forces
those types of forces that result when the two interacting objects are perceived to be physically contacting each other
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Static friction results when the surfaces of two objects are at rest relative to one another and a force exists on one of the objects to set it into motion relative to the other object
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Lesson 3
Newtons second law
The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.
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Freefall motion
all objects will fall with the same rate of acceleration, regardless of their mass
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Two body Problems
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Free body diagram is constructed and the individual forces acting upon the object are identified and calculated.
Lesson 4
Newtons third law
For every action, there is an equal and opposite reaction.
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