Introduction to Motion Answers

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?

d

determining how fast the snail moves

a

acting as a standard unit of measure

d

determining the displacement of the snail

a

acting as a reference point for detecting motion

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

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

a

a reference point

d

distance

d

displacement

s

standard units

5

The diagram shows a vertical number line.

–

–16

–

–12

1

12

1

16

6

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

7

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

8

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?

A

2 cm

B

8 cm

C

12 cm

D

15 cm

9

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

10

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?

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

11

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?

A

1

B

5

C

7

D

13

12

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

13

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.

14

Manny walked a total of 3 miles. The reference point used to calculate the total distance that he walked was the same as the ending point.Which describes where Manny most likely walked?

A

from the bottom of a hill to the top

B

on a circular nature trail

C

on a sidewalk from his house to the mall

D

from the beginning of a straight track to the end

15

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.

16

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

17

best

A

A train moves uphill as it travels in a straight path.

A

A person walks 2 miles north and 2 miles west.

A

A ball rolls from the top to the bottom of a hill.

A

A race car starts and ends at the same point on a track.

18

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

A

a reference point

B

distance

C

displacement

D

standard units

19

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

20

Which describes the positions on a horizontal number line?

A

All points to the left of one are positive when one is negative.

B

All points to the right of one are positive when one is negative.

C

All points to the left of zero are negative.

D

All points to the right of zero are negative.

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