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10 Cards in this Set
- Front
- Back
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Galileo
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Thought if there was no friction,the motion wouldn't stop. First idea of friction. Made a ramp and tried to make it frictionless, realized the ball would go forever if it was.
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Periodic Motion
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Motion created by a restoring force, object keeps moving between forces (sine curve)
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Simple Harmonic Motion
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when the force that restores the object to its equilibrium position is directly proportional to the displacement of the object (ex: pendulum)
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Hooke's Law/ Restoring Force
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found that a force on an elastic is proportional to the distance it is stretched. F= -ks
Restoring force- force in the opposite direction as being stretched that will restore the object to its original state or equilibrium point. |
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Aristotle
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Natural (any motion in the y-direction will go back to the earth, but if it goes up, it means it is meant to be in the heavens)
Violent (an imposed motion in result of a force) |
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Air resistance
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a frictional force that completely encompasses a surface, pushes through an air or liquid, depends on velocity of an object or velocity squared. Approaches some terminal velocity because object is no longer accelerating and 2 forces cancel out.
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Newton's 3rd Law
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If 2 objects interact, the force exerted by object 1 on object 2 is equal in magnitude but opposite in direction to the force exerted by object 2 on object 1. (Earth pushes up on an object and the object presses back down- frictional force)
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Newton's 2nd Law
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The acceleration produced by net force on an object is directly proportional to the magnitude of the net force, is in the same direction as the net force, and is inversely proportional to the mass of an object
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Copernicus
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Made the sun the center of the earth and figured out the orbits, but it was against the church so it wasn't published until later.
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Newton's 1st Law
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(Galileo's Law) Every object continues in a state of rest or of motion in a straight line at a constant speed unless it is compelled to change that state by forces exerted upon it
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