physics chapter 2 Flashcards
(23 cards)
a simplified version of a motion diagram in which the object in motion is replaced by a series of single points
particle model
a series of images showing the positions of a moving object at equal time intervals
motion diagram
tells you the location of the zero point of the variable you are studying and the direction in which the values of the variable increase
coordinate system
the point at which both variables have the value zero
origin
quantities that have both size (magnitude) and direction
vectors
quantities that are just numbers without any direction
scalars
the vector that represents the sum of the other two vectors
resultant
time, distance, temperature, volume, speed
scalars
increase/decrease in temperature, velocity
vector
the difference between two times
time interval
change in position
displacement
data presented by plotting the time data on a horizontal axis and the position data on a vertical axis
position-time graph
the speed and direction of an object at a particular instant
instantaneous position
the slope of a position-time graph for an object
average velocity
absolute value of the slope of a position-time graph
average speed
the slope of the line tangent to the curve on a position-time graph at a specific time is the…
instantaneous velocity
the magnitude of a vector is always
positive
the distance and direction between two positions
displacement
displacement
vector quantity
a quantity that tells you only magnitude
scalar quantity
ratio of total distance traveled to the time interval
average speed
the magnitude of velocity
speed
the magnitude of displacement
distance
