physics test

a time interval is the ___________ between two times

difference

a position time graph is created for the motion of an object. the positive direction is north. on the position time graph, the slope is a ________ value, which means the velocity of the object is moving south.

negative

for linear value, velocity can be a ________ value while speed cannot

negative

The _____________ _________ is a simplified version of a motion diagram in which the moving object is replaced with a series of single points

particle model

on a motion diagram describing the movement of an object, the average velocity will always be the same as the ____________

displacement

the ___________ of a vector is a measure of the size of the vector

magnitude

Why do different equivalent representations of motion, such as data tables, motion diagrams and position time graphs exist?

Some types of representations are more useful than others, depending on what information you have

average speed is the distance traveled divided by the time taken to travel that distance; for uniform motion, it is the ___________ ______of the slope of the objects position time graph

absolute value

what is meant by the term straigt line in motion

a path taken between two points without turning left or right

scalar quantity

a quantity that can be described by magnitude only and has no direction

vector quantity

a quantity that has both magnitude and direction

which properties of an object are ignored in the particle model of the object?

all internal motions movement of arms movement of legs

the motion of an object from a position time graph is modeled using an equation of the form y=mx+b. in this form, the value of _ represents the position at 0 s

b

A series of images showing the position of a moving object against a stationary background is called ______________________

consecutive images

a time interval is the ____________ between two times

difference

a coordinate system is a system to describe motion that gives the zero point location of the variable being studied and the _________ in which the values of the variables increase

direction

a scalar quantity ,like temperature or distance, is just a number without any ___________

direction

on a motion diagram describing the movement of an objects, the averagee velocity will always be in the same direction as the ___________

displacement

what measurements can be used to develop a coordinate system to describe the motion of an object

distance and time

is it important that images in motion diagrams be taken at _____ intervals of time

equal

it is important that images in motion diagrams can be taken at ______ intervals of time

equal

a position time graph is a graph that can be used to determine an objects velocity and position made by plotting the time data on the ___________ axis and positioning data on the __________ axis

horizontal, vertical

how are motion diagrams created

images of an object are taken at equal time intervals, with the background in the same position in all images

______________ position is the position of an object at any particular instant in time

instantaneous

Motion Diagrams show multiple images of a _______ object against motionless objects in the background

moving

a change in _______ in an indication that an objects in motion

position

a change in ________ is an indication that an object is in motion

position

displacement is a change in ________ having both magnitude and direction. it is equal to the final position minus the initial position

position

instantaneous position is the ________ of an object at any particular instant in time.

position

quanity represented on y axis

position

when an object is in motion, it experiences change in __________

position

ina series of consectuive images of a runner against the background of the park, the only thing that should change in each image is the

position of the runner

information from motion diagrams organize the times and corresponding positions of moving objects into a chart that is referred to as a ___________________ chart

position-time

the magnitude of a vector is a measure of a ____ of the vector

size

to use a particle model, the objects ___________ must be much less than the distance it moves

size

if an object moves in a straight line direction that is northward, the only other direction that it can move is _______

south

average __________ is the distance travelled divided by the time taken to travel that distance; for uniform motion, it is the absolute value of the slope of the objects position time graph

speed

a position time graph allows for the displacement of an object to be found. which statements are correct with respect to how this can be done from the graph

subtract the final position from the initial position

when the motion of an object generates a straight sloping line on a position time graph an equation of the form y=mx+b can be used to describe the motion. In this form, what does the value of m represent

the displacement of the object

on a motion diagram of two objects moving at constant speeds, which is correct

the distance between two points will be larger for the faster moving objects

which statement best describes the meaning of tww intersecting lines on a position-time graph

the two objects have the same position at that point in time

quanity represented on the x axis

time

When the slope of a position time graph is calculated the, the result gies the ________ of the object represented in the graph

velocity

a scientist has started recording the position of objects along a linear path. she decides that all positions that are to the east will be in the positive direction. any positions that are to the ____ will be recorded as negative

west