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Conceptual Physics Final
Review for Physics Final
29
Physics
9th Grade
12/09/2011

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Cards

Term
If you were to lift two equally heavy loads of laundry up a flight of stairs, how much work would you do compared to lifting just one load of laundry up the same stairs?
Definition
Twice
Term
If you were to lift one load of laundry up two flights of stairs how much work do you do compared to lifting one load of laundry up only one flight of stairs?
Definition
Twice
Term
Scalar
Definition
A quantity that has magnitude
Term
If you were to lift two eqully heavy loads of laundry up a flight of stairs, how much work do you do compared to lifyting just one load of laundry up two flights of stairs?
Definition
The same
Term
The unit of work
Definition
Joule
Term
The unit of power
Definition
Watt
Term
The unit of energy
Definition
Joule
Term
Potential energy is the energy an object has because of its...
Definition
location
Term
Vector
Definition
A quantity that has Magnitude and Direction
Term
What are 3 possible units for speed?
Definition
Miles per hour, light years per century, kilometer per hour
Term
In the absence of air resistance, objects fall at a constant _______
Definition
Acceleration
Term
What is an objects instantaneous speed at the top of its path?
Definition
0 m/s
Term
How fast does a free falling object fall after 9 seconds?
Definition
90 m/s
Term
If you drop a hammer and a piece of paper in a vacuum, which will hit the ground first?
Definition
Both will both hit it at the same time
Term
in the 1500s, an astronomer saved that the Earth revolves around the sun
Definition
Copernicus
Term
The Law of Inertia
Definition
An objects tendency to stay in motion or at rest
Term
ToF: An object on Earth will weigh less on the Moon
Definition
True. Mass or Volume would say the same
Term
ToF: Friction always works against an objects motion
Definition
True
Term
An object that is going in a straight line and has a constant speed has zero _______
Definition
Acceleration
Term
Newton's First Law
Definition
An object in motion will stay in motion unless acted upon by an outside force. Also known as the Law of Inertia
Term
Newton's Second Law
Definition
Acceleration is produced when a force acts on a mass. The greater the mass (of the object being accelerated) the greater the amount of force needed (to accelerate the object).
Term
Newton's Third Law
Definition
For every action, there is an equal or opposite reaction
Term
Another word for centrifugal force is _________
Definition
Center-Repelling
Term
Axis
Definition
Straight line which an object may rotate or revolve
Term
Centripetal Force
Definition
A center-seeking force that causes an object to move in a circular path
Term
Centrifugal Force
Definition
An apparent outward force on a rotating or revolving object; it is fictitious
Term
Revolution
Definition
Motion of an object turing around an axis outside the object
Term
Rotation
Definition
The spinning motion of an object turning around an axis inside the object
Term
Rotational Speed
Definition
The number of rotations or revolutions per unit of time
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