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WorksheetsChapter 2
Total questions: 30
Worksheet time: 15mins
what must you be able to answer to describe an object's motion ?
who and what
what and how
when and where
where and who
An object can change position along the path of all of these EXCEPT ____.
back-and-forth
circle
straight line
dotted line
A motion diagram is a series of images of a moving object that records it position after ___.
1/30 s
it comes to rest
equal time intervals
an acceleration
Replacing an object in a motion diagram with a single point is called the particle model
alternative model
frame differential
operational definition
particle model
The vector that represents the sum of two vectors is called the ___
direction
displacement
resultant
speed
In a coordinate system the ___ is the point at which both variables have the value zero
origin
magnitude
distance
vector
In this motion diagram the length of the arrow indicates how far the object is from the origin or its ____ from the origin
magnitude
position
distance
resultant
In this image 7 cm represents the ____.
resultant
origin
scalar
interval
Final position minus the inital positionis called ____.
displacement
distance
magnitude
time interval
A common symbol for a time interval uses the Greek letter ___ to represent a change in quantity
alpha
beta
delta
gamma
What is plotted on the horizontal axis of position-time graph?
motion
position
speed
time
When did the runner described in the graph reach 15.0 m beyond the starting point?
1.0s
2.0s
3.0s
4.0s
_____ is an objext's position at particular instant
Final position
instantaneous position
New position
Real Position
Will the blue jogger catch up to the red jogger in the figure ? how can you tell?
No, the lines representing the blue jogger and the red jogger get father apart as time increases
No the blue jogger is not physically fit
Yes the blue jogger is running faster than the red jogger
Yes, they startedd at the same time so the blue jogger will eventually catch up to the red jogger
The graph represents a hockey puck gliding across a frozen pond how far did the puck move between 0 s and 4 s
20 m
40 m
60 m
80 m
____ is the change in position divided by the time during the change occurred.
Average velocity
Average Speed
Instantaneous Velocity
Instantaneous Speed
What is the average velocity of the object represented in this graph?
1 m/s
2 m/s
1.5 m/s
2.5 m/s
____ is how fast an object is moving
Average time
Average speed
Edited Speed
Final Speed
You drive a car for 3.0 h at 97 km/h, then for another 3h at 72 km/h What is your average velocity
85 m/s
85 km/s
-85 km/h
85 km/h
Based on this graph, what is the object's velocity at t =2s
4 m/s
0 m/s
-5 m/s
5 m/s
A(n) ____ is a series of images of a moving object that records its position after equal time intervals
frame
operational defnition
motion diagram
association
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The vector that represents he sum of two or more vectors is called the ________.
displacement
speed
resultant
direction
In the particle model, the _____ of the object are (is) ignored.
internal motions
motion diagram
position
acceleration
The length of the position vector on a motion diagram is proportional to the _____.
distance of the object from the origin
distance of the object from the vertical intercept
average speed
velocity
A motion diagram is a series of images of a moving object that records it position after ________.
1/30s
equal time intervals
it comes to rest
an acceleration
The _______ is the point at which all variables in a coordinate system have zero magnitude
axis
origin
Intercept
coordinate system
Which of the following correctly descri bes the displacement of an object that moves from position
d = df - di
v = d/t
df = di - df
d = df + di
Which of the following is not a scalar quantity
314.7 g
150 km southwest
25*C
2 hours 27 minutes
To subtact two vectors _____.
reverse the direction of the second vector and then add them
use the equation R2 = A2 - B2
use the same process as for adding them , then change the sign of the final value
subtract 180 degree from B then use the law of Cosines
Displacement is a change in _____.
speed
position
distance
velocity
