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Forces (elasticity (when a force is applied to an object it could stretch,…
Forces
elasticity
when a force is applied to an object it could stretch, compress or bend
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inelastically deformed - doesn't return back to its original shape and length after the force is removed
for this more than one force needs to be applied otherwise it would simply move in the direction of the applied force
the extension of an elastic object is directly proportional to the force applied (provided the limit of proportionality isn't exceeded)
work is done when a force stretches or compresses an object and causes elastic potential energy to be stored in the object, if the object is elastically deformed all this energy is transferred to the elastic potential energy store
gravity
weight
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measured in Newtons, newtonmeter
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vector
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examples - force, velocity, displacement, acceleration
can be represented by an arrow, the length is the magnitude and the direction is the direction
scalar
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examples - speed, distance, mass, temperature, time
contact force
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examples - friction, air resistance, tension
non-contact force
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examples - magnetic force, gravitational force, electrostatic force
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