ch 2 physical science
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30 Terms
physics
the most fundamental physical science, deals with matter, motion, force, energy
position
location of an object with respect to a reference point
motion
the undergoing of continueous change in motion
scalar
quantity that has a magnitude but has no direction
vector
quantity that has both magnitude and direction
average speed
total distance traveled divided by time s = △d/△t
distance
actual length of the path that's traveled
instantaneous speed
object's speed at a particular instant of time
average velocity
displacement divided by the total travel time
displacement
straight-line distance between initial and final positions, toward final position, a vector quantity
instantaneous velocity
velocity at a particular instant of time
acceleration
the rate of change of velocity a = △v/△t
average acceleration
change in velocity divided by the time for change to occur
acceleration due to gravity
given as g = 9.80 m/s
freefall
state of motion solely under the influence of gravity
terminal velocity
maximum velocity reached by a falling object because of air resistance
centripetal acceleration
center seeking acceleration necessary for circular motion a c = v² / r
projectile motion
motion of a projected or thrown object under influence of gravity
relativity
area of physics NOT studying
example of scalar
40 mph
example of vector
40 mph N (make sure to include direction)
classical areas of study
1. classical mechanics
2. waves and sounds
3. thermodynamics
4. electromagnetics
5. optics
modern areas of study
1. quantum mechanics
2. atomic & nuclear physics
3. relativity
position
the reference point and a measurement scale must be given in order to define the position of an object
decription of motion
the time of motion
displacement and distance
displacement is a vector between two points
distance is the actual path traveled
optics
deals with light
thermodynamics
deals with temperature
electromagnetism
study of electricity
acceleration
time rate of velocity
Note 
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