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