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34 Cards in this Set
- Front
- Back
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Acceleration
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velocity1-velocity2 / time
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Centric Force
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cause linear motion
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Displacement
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Change in linear position of a system in a straight line
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Eccentric Force
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-Cause circular motion
-Not applied on fulcrum |
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Impulse
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Force x Time
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Inertia
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Resisistance to change
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Moment of inertia
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mathmatical relationship of mass, mass distribution, and rotational inertia
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Momentum
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a rotating systems quantity of motion
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Speed
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Angular Distance / Time
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Rotationa Inertia
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Resistance of an object to having its state of its angular motion changed
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Newton's 1st Law
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A system will remain in a constant state of motion until acted upon by an external eccentric force.
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Newton's 2nd Law
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Acceleration of a system will be directly proportional to the net force acting upon it and inversely proportional to the mass of the system to which the force is applied.
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Newton's 3rd Law
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To every torque there is always an equal and opposite reaction torque.
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Torque
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-Force x (perpendicular distance)
-Clockwise= negative -Counterclockwise=positive |
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Moment/Force/Lever Arm
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Perpendicular distance b/n the axis of rotation and line of action of the applied force
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Velocity
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Angular displacement / Time
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Archimede's Principle
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A body submerged in a fluid will be buoyed up by a force that is equal to the weight of the displaced water
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Balance
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Ability to control the current state of equilibrium
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Base of Support
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Entire area w/in a perimeter formed by the objects point of contact w/ a resistive surface that provides counterforce
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Buoyancy/Buoyant Force
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the vertical upward directed force acting upon an object that is submerged in a fluid
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Density
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mass / volume
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Equilibrium
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External net force (linear)/torque (angular) acting on an object
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Machines in the human body
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Lever systems/Wheel and axle systems/pulley systems
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Magnus Effect
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the phenomenon of a rotating object experiencinga curved path due to Magnus force
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Specific Gravity
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the ratio of the density of a given substance to the density of water
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Stability
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resistance of an object to having its equilibrium disturbed
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Stable Equilibrium
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an object that requires a larger force or torque to disrupt its current position
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Streamline
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designing the shape of an object such that changes contour are gradual from front to back
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Turbulent Flow
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the situation of irregular fluid flow in which the streamlines may be broken
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Unstable Equilibrium
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an object that reqires very little force or torque to disrupt its current position
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Viscosity
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a measure of the resistance of two adjacent layers of fluid molecules moving relative to each other
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Center of Mass
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the point at which all of a system's mass is concentrated
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Center of Gravity
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the point at which the force of gravity seems to be concentrated
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Volume
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the space occupied byy an objects mass
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