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CFI Physics Quiz 1
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Displacement
change of the position. The final position minus the initial position
Avgerage Velocity
The average distance over an average time
Acceleration
Rate of change of the velocity
Free Fall
No forces act on an object other than the gravitational force that makes the object fall
Vector
Have both magnitude and direction.
Force
A push or pull that one object exerts on another
Weight
Magnitude of the gravitational force that a planet or moon exterts on a nearby object
Inertia
Resistance to changes in velocity
Kinetic Friction
When the two objects are slipping or sliding across one another, as when a loose shingl slides down a roof.
Static friction
No slipping or sliding occurs, as between the tires of a car parked on a hill and the road surface
Conservation Law
Physical law that identifies a quantity that does not change wth time
Kinetic energy
Energy due to motion
Potential Energy
Stored energy due to interaction
Translation
Motion of an object in which any point of the object moves with the same velocity as any other point. (object does not rotate or change shape)
Work
Energy transfer that occurs when a force acts on an object that moves
Mechanical Energy
the sum of the kinetic and potential energies
Power
Rate a which work is performed or evergy is converted
Linear Momentum
Product of mass and velocity
Impulse
Product of a vector and a positive scalar
Center of Mass
An average location of the system (a point)
Torque
Role in otation that force itself plays in translation. A measure of how effective a given force is at twisting or turning something
Center of Gravity
Total force of gravity can be considered to act at a single point
Fluids
materials that flow and include both liquids and gases. Nearly incompressible
Pressure
Force per unti area is the same for any orientation of the surface
Density
mass per unit volume
Buoyant force
total force on an object due to fluid
Archimedes Principle
The buoyant force on an object is equal to the weight of an equal volume of fluid
Bernoulli Effect
Fluid flows faster where the pressure is lower
Surface tension
the force per unit lenght with which the surface pulls in its edge
Author
BrettIRB
ID
63389
Card Set
CFI Physics Quiz 1
Description
Voc Terms for quiz
Updated
2011-02-08T20:18:53Z
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