MAKE IT YOURS

A world for every learner

Choose a grade to discover its colours and creative world.

Grade 8 Newton's Second Law (F = ma) Worksheet with Answers

Grade 8 (US) · Year 9 (UK) · Class 8 (India) · Science

Unit 6: Going FurtherAdvanced: High School PreviewNGSS HS-PS2-1Advanced

Using F = ma to find force, mass or acceleration, including net force. This free middle school worksheet has 16 questions and a full answer key. Print it or save it as a PDF — every answer is checked by code, not guessed.

Save to PinterestJump to answer key
  • Answer keys checked by code
  • No ads, ever
  • No student accounts needed
  • Safety & privacy
Practice Sheetaethelsystems.com

Newton's Second Law (F = ma)

Grade 8 · Science

Score___ / 16

Name

Class

Date

Learning goal: Advanced: High School Preview · NGSS HS-PS2-1

Directions: This worksheet has 2 parts. Read the instructions at the start of each part.

Example

What force is needed to accelerate a 13 kg object at 4 m/s²?

Answer: 52 N

Part A

Label the diagram. Use the words in the box.

Word bank

applied forcefrictiongravitynormal force
1234
  1. 1
  2. 2
  3. 3
  4. 4
Part B

Answer each question. Use full sentences where you can.

  1. 5

    A net force of 270 N acts on a 30 kg object. What is its acceleration?

    30 kgF = 270 Na = ?
  2. 6

    A net force of 235 N acts on a 47 kg object. What is its acceleration?

    47 kgF = 235 Na = ?
  3. 7

    A net force of 8 N gives an object an acceleration of 4 m/s². What is its mass?

    m = ?F = 8 Na = 4 m/s²
  4. 8

    A net force of 60 N acts on a 30 kg object. What is its acceleration?

    30 kgF = 60 Na = ?
  5. 9

    What force is needed to accelerate a 36 kg object at 8 m/s²?

    36 kgF = ?a = 8 m/s²
  6. 10

    A net force of 385 N gives an object an acceleration of 11 m/s². What is its mass?

    m = ?F = 385 Na = 11 m/s²
  7. 11

    What force is needed to accelerate a 16 kg object at 11 m/s²?

    16 kgF = ?a = 11 m/s²
  8. 12

    A net force of 484 N acts on a 44 kg object. What is its acceleration?

    44 kgF = 484 Na = ?
  9. 13

    A net force of 162 N acts on a 18 kg object. What is its acceleration?

    18 kgF = 162 Na = ?
  10. 14

    What force is needed to accelerate a 28 kg object at 12 m/s²?

    28 kgF = ?a = 12 m/s²
  11. 15

    What force is needed to accelerate a 24 kg object at 5 m/s²?

    24 kgF = ?a = 5 m/s²
  12. 16

    A net force of 18 N gives an object an acceleration of 1 m/s². What is its mass?

    m = ?F = 18 Na = 1 m/s²

★ Challenge corner for fast finishers

Why does your breath make fog on a cold window?

How did I do?

Teacher's comments

Free printable worksheets with answer keys · aethelsystems.com/worksheets/science/8/newton_second_law

Answer key (click to show)
  1. 1.applied force
  2. 2.friction
  3. 3.gravity
  4. 4.normal force
  5. 5.9 m/s²
  6. 6.5 m/s²
  7. 7.2 kg
  8. 8.2 m/s²
  9. 9.288 N
  10. 10.35 kg
  11. 11.176 N
  12. 12.11 m/s²
  13. 13.9 m/s²
  14. 14.336 N
  15. 15.120 N
  16. 16.18 kg
  17. ★water vapor in your breath condenses on the cold glass (challenge corner)

Need another Newton's Second Law (F = ma) worksheet?

Generate unlimited fresh versions at easy, medium or hard difficulty, each with its own answer key. Free during our launch — no card needed.

Create a free account

How to use this worksheet

  • Works well as a bell-ringer, exit ticket, homework set or quick quiz.
  • Have students self-check with the answer key, then correct their own mistakes before you review.
  • Generate a new version of the same topic for a re-test, so students can't just memorise the answers.

Related worksheets

Newton's Second Law (F = ma) at other grades

Grade 11

More Grade 8 Science worksheets

Grade 8 Atomic Structure & IsotopesGrade 8 Punnett Squares & CrossesGrade 8 Science Investigations: Data & ClaimsGrade 8 Challenge: Think Like a ScientistGrade 8 Atoms & ElementsGrade 8 Periodic Table BasicsGrade 8 Compounds & MoleculesGrade 8 Chemical Reactions

Guides for teaching Newton's Second Law (F = ma)

How the Circulatory System Works: A Guide for Grades 5–8The heart, blood and blood vessels in plain language — the path blood takes, what each part does, and the questions students most often get wrong.

Can't find what you need? Tell us which worksheet to make next.

Frequently asked questions

Does this Grade 8 Newton's Second Law (F = ma) worksheet come with answers?

Yes. The full answer key is on this page, and it prints on its own page after the questions. Every answer is calculated or checked by code rather than written by an AI model, so the key is always correct.

How do I print it or save it as a PDF?

Click "Download PDF" to save a ready-to-print PDF with the answer key on the last page, or click "Print" to send the worksheet and answer key straight to your printer.

Can I get a different Newton's Second Law (F = ma) worksheet?

Yes. Create a free account to generate as many fresh Grade 8 Newton's Second Law (F = ma) worksheets as you like, at easy, medium or hard difficulty, each with its own answer key.

Is this worksheet free?

Yes. This worksheet is free to print, and Practice Sheet is free to use during our launch with no card needed.