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Final Exam
Semester One Phys World Final Exam
51
Physics
10th Grade
01/20/2014

Additional Physics Flashcards

 


 

Cards

Term
Motion
Definition
Any change in position
Term
Distance
Definition
The total length that something travels
Term
Displacement
Definition
The measurement directly from starting point to ending point.
Term
Speed
Definition
The rate of change in position / how something changes in time.
Term
What is the base unit for speed?
Definition
m/s (meters/second)
Term
Does direction matter in Speed?
Definition
NO
Term
Instantaneous Speed
Definition
The rate of speed at any given moment.
Term
Example of Instantaneous Speed:
Definition

Car Speedometer

 

 

Term
Constant Speed
Definition
When speed does NOT change. (Extremely uncommon).
Term
Example of Constant Speed:
Definition
Not moving.
Term
Average Speed:
Definition
Total distance covered during a certain period of time.
Term
Velocity
Definition
The rate of change of motion in a certain DIRECTION. (aka speed in a certain direction).
Term
Base Unit for Velocity
Definition
m/s (meters/second) including a direction.
Term
Vector
Definition
A line that shows direction and magnitude.
Term
What is a Vector used for?
Definition
Velocity, Forces, etc.
Term
Acceleration
Definition
The rate of change in velocity.
Term
What are 3 ways to change Acceleration/ Velocity?
Definition
Slow down , speed up , or change direction.
Term
How can Acceleration be positive?
Definition
Same direction as movement.
Term
How can Acceleration be negative?
Definition
Push break in car. (slow down) .
Term
What is the base unit for Acceleration?
Definition
m/s2 (meters per second squared) . (m/s/s) .
Term
Energy
Definition
The ability to do work.
Term
Pendulems
Definition
= awesome.
Term
Energy is Conserved
Definition
Means energy is neither created nor destoryed. The amount of energy in the Universe is constant.
Term
Do we create energy at a power plant?
Definition
No, we simply transform energy at our power plants.
Term
Does the sun create energy?
Definition
No, it exchanges mass for energy.
Term
Potential Energy
Definition
is stored energy.
Term
Kinetic Energy
Definition
involves motion.
Term
6 types of Potential Energy:
Definition
Nuclear , Elastic , Spring , Electric , Gravitational , Chemical Energy.
Term
Nuclear PE
Definition
Sored inside neucleus of an atom.
Term
Elastic
Definition
Rubber band (when streched) .
Term
Spring
Definition
In a mattress , when pushed up and down .
Term
Gravitational
Definition
Roller coaster.
Term
Chemical PE
Definition
Battery.
Term
What does one Joule equal?
Definition
= 1 kgm2/s2
Term
Potential Energy
Definition
Height
Term
Gravitational acceleration:
Definition
9.8 m/s2
Term
Why does every object have Gravitational Potential Energy?
Definition
because everything is lifted up from the surface of the earth.
Term
What is the base unit for Mass?
Definition
kg (kilograms) .
Term
What is the base unit for Energy and Work?
Definition
J (Joules) .
Term
Energy is?
Definition
Conserved
Term
What does conservation of energy mean?
Definition
It can change between Kinetic and Potential, but never disappears.
Term
What is the total amount of energy called?
Definition
Mechanical Energy
Term
What are different types of Kinetic Energy?
Definition
light , heat , sound .
Term
Force
Definition
A push or pull one body exerts on another.
Term
What is the base unit for Force?
Definition
N (Newtons).
Term
Balanced Force
Definition
Equal in size, opposite in direction. (no acceleration).
Term
Unbalanced Force
Definition
Unequal forces. (Acceleration occurs).
Term
Net Force
Definition
Sum of all forces on an object. Object will move in the direction of the net force.
Term
Inertia
Definition
Tendency of an object to resist any change in motion. More MASS equals GREATER Inertia.
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