Chapter 1 Reading Guide Lesson 1- Speed and Velocity Answer Key

Affiliate two Answer Primal

Study Guide

My Notebook

1. Answers will vary, just could include principal ideas from the summary or 1 main idea from each Reading (3).
2. Students should locate at least i set of antonyms or opposites: fast/slow; chop-chop/slowly; going faster/slowing down.
3. The letter 5 = velocity, d = altitude, and t = time. The formula tin can be written v = d ÷ t it may also exist written in fraction form.

Guided Reading

2.1 Speed and Velocity

1. smallest, largest
2. summate
3. altitude
4. motion

two.2 Graphing Motion

1. variables
2. position
3. graph

ii.iii Acceleration

1. motion
2. faster
3. direction

Allow'southward Review

1. c
2. a

Bank check Your Understanding

Reading 2.i

1. It moves the same altitude each 2nd.
2. Velocity includes direction, and speed doesn't.
3. Information technology must be moving in a straight line.
4. m/s, mph, km/h
5. 70 km/h
6. 30 km
7. twenty seconds
8. 960 km
9. Answers are:
1. Cyclist B is moving faster. The picture shows that cyclist B moves a greater altitude each 2d.
2. Cyclist A is moving at ane grand/s, and cyclist B is moving at two grand/s.

Reading 2.2

1. The slope tells the object'southward speed or velocity.
2. The x-values are the fourth dimension, and the y-values are the position.
3. Robin is faster. Information technology takes Joel 15 seconds to travel 100 meters, but it only takes Robin 12 seconds.
4. Robin: viii.33 m/s; Joel: vi.67 m/s
5. Answers are:

2. xvi m
6. B

Reading ii.3

1. The unit m/s/s means a change in a speed measured in m/southward that happens each 2d. The unit "second" appears in one case for the speed and in one case for the time over which speed changes.
2. 2 yard/due south/due south
3. Answers are:
1. 20 grand/southward
2. 4 m/s/s
4. Yep. Irresolute direction is acceleration.
5. Answers are:
1. C
2. A
3. B
6. The speed increases past 9.8 m/southward each 2d.
7. 19.half dozen m/south
8. Yes, it is accelerating because it is irresolute direction.

Connection: High Tech Animal Trackers

1. The harp seal'south average speed was 0.93 km/hr.
2. Whatever two of the following answers is correct: Changes tin be made to shipping lane locations. Send traffic can be slowed in calving areas. Hunting can be restricted. Food sources and/or critical habitat areas can be protected.
3. Answers will vary based on current tagging action.

Chapter Action: What'south Your Speed?

1. (run across data table below)

2. Lap	Distance (m)	Fourth dimension (min)	Speed (m/min)
   1	400	2.6	154
   2	400	ii.9	138
   3	400	2.5	160
   4	400	iii.0	133

3. Answers are:
1. Answers may vary. Sample answer: No, you cannot tell where the runner stopped in Figure A because the figure only shows the path the runner traveled.
2. The runner sped upwardly in Lap 3. The speed for the runner in Lap three was 160m/min compared to 138m/min in Lap 2.
3. Answers may vary. Sample respond: In Figure A the runner'south path leaves the track at two points. It is possible that there is an mistake in the GPS data coming from a betoken where the runner was close to the border of the track, just did not actually exit it. The GPS device may have determined that the runner left the runway at this point.

Chapter 2 Review

Vocabulary

Reading two.i

1. velocity
2. origin
3. position
4. constant speed, boilerplate speed
5. speed
6. distance

Reading 2.2

7. gradient

Reading two.3

8. complimentary fall
9. acceleration
10. acceleration due to gravity

Concepts

Reading 2.one

1. Answers are:
1. positive
2. negative
3. negative
4. positive
2. null
3. Position is where an object is located, and distance is the space between two positions.
4. A aeroplane flying at a steady 400 mph is moving at a constant speed. A aeroplane that is speeding up while moving downward the track is not moving at a constant speed.
5. Both tell how fast an object is moving. Velocity also tells the direction the object is moving.
6. m/s, mph, km/h
7. Identify what the problem is asking. Effigy out what the given information is. Place the relationships y'all can apply. Solve the problem.
8. Answers are:
1. t=d/five
2. v=d/t
3. d=vt

Reading 2.2

9. The manipulated variable is on the x-axis, and the responding variable is on the y-axis.
10. Time is e'er graphed on the 10-axis.
11. The slope is constitute by dividing the rise (the vertical distance between two points) by the run (the horizontal altitude between two points).
12. The slope is the velocity.
13. iii, 4, 1, 2
14. If the graph slopes upwardly, information technology is moving away. If it slopes downward, it is moving toward the origin.
15. The altitude is equal to the area under the graph.

Reading 2.3

16. zero
17. grand/s2
18. speed (or velocity); three km/h; second
19. The object'south speed is changing.
20. It means an object is slowing down. (It can besides mean the object is speeding up while moving in the negative direction.)
21. 9.8 chiliad/south
22. C
23. Constant speed means that the speed is non changing. Constant acceleration ways the speed is changing at a steady charge per unit.
24. An object that is turning is accelerating because its management is changing.

Math and Writing Skills

Reading 2.1

1. xx cm
2. 12 cm
3. 2 object that are moving at the same speed but in different directions have dissimilar velocities.
4. sixty 1000; nine s; 50 grand/s
5. 0.ane mi/min
6. Answers are:
1. 300 cm/h
2. five cm/min
3. 3 yard/h
7. v hours
8. 2 p.m.
9. 134.iv km

Reading 2.2

10. Answers are:

2. His speed was not constant. The graph does not have a constant slope.
3. iv thousand/s

12. Answers are:
1. 2 thousand/south
2. one m/south

14. 200 meters

Reading ii.3

Time (s)	Speed (m/s)
0	0
1	3
2	6
3	9
iv	12
5	15

16. 2 m/s2
17. Answers are
1. 2 one thousand/s
2. 0.5 m/s2
18. -7.5 km/h/s
19. The object is moving away from the origin and steadily getting faster.

21. If they are moving in unlike directions, and so their velocities are different.

Test Do

1. B
2. D
3. A
4. C

Project

Criteria	Splendid	Good	Needs some improvement	Needs much improvement	Your score
Egg container is completed on time and meets the design criteria.	four	three	2	1
Egg is able to survive the autumn from the required meridian.	4	3	2	1
Egg container makes efficient employ of materials and has a small-scale mass.	4	three	2	one
Affiche includes diagram of structure, discusses how egg container performed in the competition, and gives suggestions for improvement.	4	three	ii	1
Overall pattern, creativity, and structure	four	iii	ii	1
Total

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