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8th Grade Ch 1
Test Description: Motion
Instructions: Answer all questions to get your test result.
1) Velocity includes
A
speed and direction
B
distance and direction
C
speed and distance
D
reference point and speed
2) What does NOT cause acceleration
A
changing directions
B
speeding up
C
slowing down
D
changing reference points
3) The starting point you choose to describe the location, or position, of an object
A
position
B
speed
C
acceleration
D
reference point
4) A complete description of your position includes a
A
all of the above
B
direction
C
distance
D
reference point
5) the difference between the initial (first) position and the final position
A
displacement
B
direction
C
distance
D
motion
6) speed at a specific instant in time
A
constant speed
B
average speed
C
velocity
D
instantaneous speed
7) Is this statement correct? The velocity of the runner was 4 m/s.
A
correct
B
incorrect
8) Why is the statement, The runner's velocity was 4 m/s, incorrect?
A
He didn't include direction
B
He was traveling in km/s
C
He went faster
D
He went slower
9) A measure of the change in velocity during a period of time
A
acceleration
B
average speed
C
displacement
D
position
10) The process of changing position
A
velocity
B
speed
C
motion
D
acceleration
11) If you travel in a direction that is opposite of your reference direction, your motion is
A
negative
B
positive
12) The unit for acceleration is
A
m/s
B
miles per hour
C
m/s^2
D
km/h
13) Speed -time graphs show changes in direction.
A
true
B
false
14) Farmer Dave's tractor travels 4000 m in 4 seconds. What is its speed?
A
1000 m/s^2
B
4 m/s
C
100 m/s^2
D
1000 m/s
15) A car was traveling 100 m/s. 5 seconds later, it was traveling 200 m/s. What is the acceleration?
A
20 m/s
B
20 m/s^2
C
100 m/s
D
200 m/s^2
16) A measure of the distance an object travels per unit of time
A
journeys
B
distance
C
displacement
D
momentum
17) The length of a path that an object in motion takes is called its
A
VELOCITY
B
ACCELERATION
C
SPEED
D
DISPLACEMENT
18) Speed at a specific instant in time
A
average speed
B
instantaneous speed
C
constant speed
D
reference point
19) What is a limit of a speed-time graph?
A
it doesn't tell you when something slows down
B
it doesn't tell you when something speeds up
C
it doesn't tell you when something is at rest
D
it doesn't tell you the direction something is going
20) A change in velocity during a time interval divided by the time interval during which the velocity changes
A
velocity
B
speed
C
average acceleration
D
motion
*select an answer for all questions
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