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Grade 11 Newton's Second Law (F = ma) Worksheet with Answers

Grade 11 (US) · Year 12 (UK) · Class 11 (India) · Science

Unit 1: Motion & ForcesNewton's LawsNGSS HS-PS2-1

Using F = ma to find force, mass or acceleration, including net force. This free high 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.

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Newton's Second Law (F = ma)

Grade 11 · Science

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Name

Class

Date

Learning goal: Newton's Laws · 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 14 kg object at 3 m/s²?

Answer: 42 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 27 kg object. What is its acceleration?

    27 kgF = 270 Na = ?
  2. 6

    What force is needed to accelerate a 17 kg object at 5 m/s²?

    17 kgF = ?a = 5 m/s²
  3. 7

    What force is needed to accelerate a 6 kg object at 5 m/s²?

    6 kgF = ?a = 5 m/s²
  4. 8

    A net force of 45 N gives an object an acceleration of 9 m/s². What is its mass?

    m = ?F = 45 Na = 9 m/s²
  5. 9

    A net force of 3 N gives an object an acceleration of 3 m/s². What is its mass?

    m = ?F = 3 Na = 3 m/s²
  6. 10

    A net force of 74 N gives an object an acceleration of 2 m/s². What is its mass?

    m = ?F = 74 Na = 2 m/s²
  7. 11

    What force is needed to accelerate a 4 kg object at 12 m/s²?

    4 kgF = ?a = 12 m/s²
  8. 12

    What force is needed to accelerate a 11 kg object at 12 m/s²?

    11 kgF = ?a = 12 m/s²
  9. 13

    A net force of 210 N gives an object an acceleration of 10 m/s². What is its mass?

    m = ?F = 210 Na = 10 m/s²
  10. 14

    A net force of 126 N acts on a 21 kg object. What is its acceleration?

    21 kgF = 126 Na = ?
  11. 15

    A net force of 336 N acts on a 48 kg object. What is its acceleration?

    48 kgF = 336 Na = ?
  12. 16

    What force is needed to accelerate a 45 kg object at 2 m/s²?

    45 kgF = ?a = 2 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/11/newton_second_law

Answer key (click to show)
  1. 1.applied force
  2. 2.friction
  3. 3.gravity
  4. 4.normal force
  5. 5.10 m/s²
  6. 6.85 N
  7. 7.30 N
  8. 8.5 kg
  9. 9.1 kg
  10. 10.37 kg
  11. 11.48 N
  12. 12.132 N
  13. 13.21 kg
  14. 14.6 m/s²
  15. 15.7 m/s²
  16. 16.90 N
  17. ★water vapor in your breath condenses on the cold glass (challenge corner)

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