Free Printable WorksheetScienceGrade 12Science Curriculum12.35

12.35 Newton's Third Law Force Pairs Worksheet

Download our free printable Physics Science worksheet on 12.35 Newton's Third Law Force Pairs. Ideal for classroom practice, homeschool learning, independent homework, and standardized test preparation. Available in both print-ready PDF and editable DOCX formats.

Choose your preferred download format:

100% Free • No registration or login required • Instant file access

Download PDF Download DOCX

Prefer interactive practice with instant grading and explanations?Practice Newton's Third Law Force Pairs Online

Worksheet Overview & Skills Covered

Core academic competencies and curriculum alignment

This Physics Science worksheet provides structured practice on 12.35 Newton's Third Law Force Pairs. Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

Newton's Third Law Force Pairs: Select the correct action-reaction force pair and explain why the forces act on different objects. Aligned to NGSS, CCSS Literacy and Mathematics, AP Physics, and selected state frameworks 12.35 - Newton's Third Law Force Pairs: NGSS HS-PS2-1, HS-PS2-3, HS-PS2-4; CCSS HSN-Q.A, HSA-CED.A, HSG-MG; AP Physics 1 Unit 2; AP Physics C: Mechanics dynamics enrichment; TX TEKS Physics §112.45(c) forces; FL SC.912.P.12.3, SC.912.P.12.4; VA PH.3; MA/CA/NY HS-PS2.

Whether you are an educator preparing classroom handouts, a tutor reinforcing weekly topics, or a parent supporting homeschool learning, this printable resource gives students the deliberate practice required to achieve subject fluency and master state standards.

Grade

Physics

Subject

Science

Domain

Science Curriculum

Formats

PDF & DOCX

Sample Practice Problems

Preview the types of problems and questions covered in this worksheet

Below are sample questions representative of the exercises included on this worksheet and related 12.35 Newton's Third Law Force Pairs skill assessments:

Problem 1Difficulty: Mastery

A student computes the net force on a cart and wants to include the reaction to a hand's push on the cart. What is the best advice?

AInclude the cart's force on the hand so the push cancels automatically.

BReplace the hand's push with the cart's force on the hand because they are equal.

CIgnore Newton's third law unless the cart is at rest.

DDo not include the cart's force on the hand in the cart's net force because it acts on the hand.

Solution & Explanation:A net-force sum for the cart includes only forces acting on the cart. The reaction force is real but acts on the hand, so it belongs to a different free-body diagram.

Problem 2Difficulty: Mastery

A climber presses sideways on a vertical rock wall with her shoe. The wall pushes her shoe outward, helping her balance. Which force is the third-law partner?

AEarth pulls her body downward with equal magnitude.

BFriction from the wall pushes her shoe upward.

CHer shoe pushes the wall inward with equal magnitude.

DThe wall pushes her shoe outward a second time after she moves.

Solution & Explanation:The wall's normal force on the shoe pairs with the shoe's normal force on the wall, equal and opposite on different objects.

Problem 3Difficulty: Mastery

A train locomotive pulls a freight car forward through a coupler. Which option correctly identifies the third-law partner to the coupler's force on the freight car?

AThe locomotive's wheels push backward on the track.

BThe freight car pulls backward on the coupler.

CThe track pushes forward on the locomotive.

DThe freight car's weight pulls downward on Earth.

Solution & Explanation:The relevant interaction is coupler on freight car and freight car on coupler. Wheel-track forces are how the train system gains external forward force.

Want more practice questions with step-by-step guidance?

Practice All Questions Online

Frequently Asked Questions

Common questions about printing, using, and solving this worksheet

QHow do I download and print this 12.35 Newton's Third Law Force Pairs worksheet?

Click either the "Download PDF" or "Download DOCX" button at the top of the page. You can print the PDF directly from your browser or edit the DOCX file in Microsoft Word or Google Docs to tailor the questions to your students.

QIs this 12.35 Newton's Third Law Force Pairs worksheet free for teachers and homeschoolers?

Yes! All learning materials, worksheets, and practice resources on Free K12 Practice are 100% free for teachers, students, parents, tutors, and homeschooling families for non-commercial educational use. No account or subscription is required.

QCan students practice 12.35 Newton's Third Law Force Pairs online with instant feedback?

Yes! In addition to this printable worksheet, students can practice 12.35 Newton's Third Law Force Pairs interactively on our platform with automated grading, instant score tracking, and detailed step-by-step solutions.

QWhat grade level and standards does this worksheet align with?

This worksheet is designed specifically for Physics Science students. It aligns with educational standard 12.35 (NGSS HS-PS2-1, HS-PS2-3, HS-PS2-4; CCSS HSN-Q.A, HSA-CED.A, HSG-MG; AP Physics 1 Unit 2; AP Physics C: Mechanics dynamics enrichment; TX TEKS Physics §112.45(c) forces; FL SC.912.P.12.3, SC.912.P.12.4; VA PH.3; MA/CA/NY HS-PS2.).