AnswersLA-Physical Science AUnit Test

Unit Test — Unit test Answers

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1
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Which equation can be used to solve for acceleration?

A
Option
Option A
B
Option
Option B
C
Option
Option C
D
Option
Option D
2
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Which units are used to measure both velocity and speed? Select three options.

A
m/s
B
d/t
C
km/h
D
mph
E
m2
3

Which equation is most likely used to determine the acceleration from a velocity vs. time graph?

A
a =
Option A
B
m =
Option B
C
a =
Option C
D
m =
Option D
4

Two cars started at the same position and were driven through a city using different streets. The red car traveled north 2 miles, then east 4 miles, and then south 6 miles. The green car traveled south 4 miles and then east 4 miles. Both cars ended at the same location.Which best compares the motion of the cars?

A
The red car traveled a shorter distance, but the displacement of the cars was equal.
B
The green car traveled a shorter distance, but the displacement of the cars was equal.
C
The green car had a shorter displacement, but the distance traveled by the cars was equal.
D
The red car had a shorter displacement, but the distance traveled by the cars was equal.
5

What is required in order to determine whether or not an object moves?

A
a reference point
B
distance
C
displacement
D
standard units
6

Which graph shows a negative acceleration?

A
A graph with horizontal axis time (seconds) and vertical axis position (meters). A straight line runs from 0 seconds 0 meters upward.
Option A
B
A graph with horizontal axis time (seconds) and vertical axis position (meters). A concave line runs from 0 seconds 0 meters upward.
Option B
C
A graph with horizontal axis time (seconds) and vertical axis position (meters). A straight line runs from 0 seconds some positive number meters upward downward to some positive number of seconds 0 meters.
Option C
D
Option
Option D
7

The diagram shows a vertical number line.

Question illustration
A
–16
B
–12
C
12
D
16
8

Which could describe the motion of an object?

A
distance = 1 meter and displacement = 10 meters
B
distance = 10 meters and displacement = 100 meters
C
distance = 0 and displacement = 10 meters
D
distance = 10 meters and displacement = 10 meters
9

Which scenario best describes an object with a displacement of zero?

A
A train moves uphill as it travels in a straight path.
B
A person walks 2 miles north and 2 miles west.
C
A ball rolls from the top to the bottom of a hill.
D
A race car starts and ends at the same point on a track.

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