AnswersAA-F26 Physical ScienceIntroduction to Motion

Introduction to Motion Answers

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Four different objects are placed on a number line at 0. The chart describes the motion of each object.Using the information in the chart, the distance and displacement of each object can be determined. Which object has a distance that is three times as great as its displacement?

Question illustration
A
W
B
X
C
Y
D
Z
2
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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.
3

A linear track begins at 0 meters and has a total distance of 100 meters to the finish line. Juliet starts at the 10-meter mark while practicing for a race.After running 45 meters, how far is she from the beginning of the track?

A
10 meters
B
35 meters
C
45 meters
D
55 meters
4

Which scenario best describes motion?

A
a toy train in position 4 on a number line
B
a race track that is 100 meters long
C
a ball rolling from point A to point B
D
a student living 150 miles from Chicago
5

Julie finds a snail on the sidewalk and wants to know whether or not the snail moves throughout the day. She places a single mark on the sidewalk next to the snail.What will Julie use the mark for initially?

A
determining how fast the snail moves
B
acting as a standard unit of measure
C
determining the displacement of the snail
D
acting as a reference point for detecting motion
6

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.
7

Keisha told her friend that she can get to the town library by walking one mile east, turning left, and then walking a half a mile north.Which best describes how Keisha can improve these instructions to better help her friend find the library?

A
using meters as the unit instead of miles
B
drawing a picture of the library on a line diagram
C
estimating the amount of time to get to the library
D
providing a reference point
8

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

A
a reference point
B
distance
C
displacement
D
standard units
9

An object starts at position 12 on a horizontal line with a reference point of 0. What is the position of the object if it moves 14 units to the left?

A
–26
B
–2
C
2
D
26
10

The diagram shows a vertical number line.

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

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