Name
Class
Date
What is Newton’s second law of motion?
Lesson Review
Use the equation F = m × a to complete the table.
Force
(N)
Mass
(kg)
Acceleration
(m/s 2 )
15
1.
3,052
20
70
2.
8.5
3.
250
10
3
4.
63
5.
441
6.
50
7.
5.5
21
0.5
0.3
8.
2,602.8
18
0.6
9.
Skill Challenge
Skills: interpreting a diagram, analyzing, modeling
Use the diagram to answer the following questions.
1. How could the acceleration of the person on the swing be increased? _____________________________
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2. What would happen to the acceleration if one person pushed two people on the swing? Why?
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Concepts and Challenges in Physical Science, Teacher’s Resources CD-ROM
(c) by Pearson Education, Inc./Globe Fearon/Pearson Learning Group. All rights reserved.
Motion
Answer Key
What is Newton's second law of motion?
Lesson Review
1. 300 2. 43.6 3. 25.5 4. 25 5. 346.5 6. 21 7. 100
8. 0.18 9. 144.6
Skill Challenge
1. The acceleration would be increased if both
people pushed the person on the swing. This would
increase the force while keeping the mass constant,
thereby increasing acceleration. 2. An extra person
sitting on the swing increases the mass, while the
force is kept constant. Since force equals mass times
acceleration, a greater mass corresponds to a smaller
acceleration for a given force.
Concepts and Challenges in Physical Science, Teacher’s Resources CD-ROM
(c) by Pearson Education, Inc./Globe Fearon/Pearson Learning Group. All rights reserved.
Motion