AnswersWA-Physical Science BIntroduction to Motion

Introduction to Motion Answers

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An object is placed at 0 on a number line. It moves 3 units to the right, then 4 units to the left, and then 6 units to the right. What is the displacement of the object?

1
1
5
5
7
7
1
13
2
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Sonya is playing a board game, and each space on the board game measures 1 centimeter. She moves her game token 5 spaces up from the start position. Then she moves it 5 spaces to the left. Finally, Sonya moves her token 2 spaces down.What is the total distance the token moved?

2
2 cm
8
8 cm
1
12 cm
1
15 cm
3

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
4

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?

1
10 meters
3
35 meters
4
45 meters
5
55 meters
5

Nancy and Hiyang are training for a race. They entered some of their training notes in a chart.Which information should be added to the chart in order find out who ran a greater distance?

Question illustration
A
the time spent running each day
B
the reference point used each day
C
the units used to measure distance each day
D
the location used by the runners each day
6

best

T
The red car traveled a shorter distance, but the displacement of the cars was equal.
T
The green car traveled a shorter distance, but the displacement of the cars was equal.
T
The green car had a shorter displacement, but the distance traveled by the cars was equal.
T
The red car had a shorter displacement, but the distance traveled by the cars was equal.
7

The diagram shows a vertical number line.

Question illustration
–
–16
–
–12
1
12
1
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

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
10

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

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