Section 2.1
Picturing Motion
Practice Test
1.
The length of the position vector on a motion diagram is proportional to the __________.
a.
velocity
b.
average speed
c.
distance of the object from the origin
d.
distance of the object from the intercept
Hint
2.
In the particle model, the __________ of the object are (is) ignored.
a.
motion diagram
b.
internal motions
c.
acceleration
d.
position
Hint
3.
A motion diagram is a series of images of a moving object that records its position after __________.
a.
it comes to rest
b.
equal time intervals
c.
an acceleration
d.
1/30 s
Hint
4.
Replacing an object in a motion diagram with a single point is called the __________.
a.
operational definition
b.
particle model
c.
alternative model
d.
frame differential
Hint
5.
The vector that represents the sum of two vectors is called the __________.
a.
speed
b.
displacement
c.
direction
d.
resultant
Hint
6.
A(n) __________ is a series of images of a moving object that records its position after equal time intervals.
a.
association
b.
motion diagram
c.
operational definition
d.
frame
Hint
7.
In order to use the particle model, the __________ must be __________ moved.
a.
size of the object, much less than the distance
b.
distance, much less than the size of the object
c.
size of the object, much greater than the distance
d.
distance, equal to the size of the object
Hint
