Free Printable WorksheetScienceGrade 9Science CurriculumNGSS HS-PS2-1

9.45 Balanced and Unbalanced Forces Worksheet

Download our free printable Physical Science with Earth and Science Science worksheet on 9.45 Balanced and Unbalanced Forces. Ideal for classroom practice, homeschool learning, independent homework, and standardized test preparation. Available in both print-ready PDF and editable DOCX formats.

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Worksheet Overview & Skills Covered

Core academic competencies and curriculum alignment

This Physical Science with Earth and Science Science worksheet provides structured practice on 9.45 Balanced and Unbalanced Forces. Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

Balanced and Unbalanced Forces: MCQ focus: determine net force, identify equilibrium, and predict motion changes from force diagrams. Aligned to NGSS high school Physical Science, Earth and Space Science, and Engineering Design; NRC/DCI; SEP/CCC; CCSS math/literacy connections; selected CA NGSS, NYSSLS, Florida CPALMS, and Texas TEKS references NGSS HS-PS2-1 - NGSS-aligned Balanced and Unbalanced Forces: NGSS: HS-PS2-1; NRC/DCI: PS2.A; SEP/CCC: Models / Cause and effect; Common: HSN-Q.A; State refs: CA/NYSSLS same HS-PS PE family; FL SC.912.P.12; TX IPC force and motion strand.

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

Physical Science with Earth and Science

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 9.45 Balanced and Unbalanced Forces skill assessments:

Problem 1Difficulty: Mastery

In the free-body diagram, a 5 kg object has a 3 N east force and a 4 N south force. What is its acceleration?

A1 m/s² southeast

B7 m/s² southeast

C1 m/s² northwest

D5 m/s² northwest

Solution & Explanation:The perpendicular forces form a 3-4-5 triangle, so the net force is 5 N southeast. Acceleration is 5 N ÷ 5 kg = 1 m/s² southeast.

Problem 2Difficulty: Mastery

A 1000 kg car needs a net force of 2000 N east to accelerate as planned. The engine provides 3500 N east. What total resistive force is acting?

A1500 N east

B1500 N west

C5500 N west

D2000 N west

Solution & Explanation:To leave a 2000 N east net force from a 3500 N east engine force, resistive forces must subtract 1500 N, so they act 1500 N west.

Problem 3Difficulty: Mastery

In the free-body diagram, an asteroid is pulled equally left and right by two small bodies. What can happen to the asteroid's motion?

AIt must stop immediately

BIt can continue at the same velocity

CIt must accelerate right

DIt must accelerate left

Solution & Explanation:The equal opposite gravitational pulls cancel, giving zero net force. With zero acceleration, the asteroid can continue moving at constant velocity.

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Frequently Asked Questions

Common questions about printing, using, and solving this worksheet

QHow do I download and print this 9.45 Balanced and Unbalanced Forces worksheet?

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QIs this 9.45 Balanced and Unbalanced Forces worksheet free for teachers and homeschoolers?

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Yes! In addition to this printable worksheet, students can practice 9.45 Balanced and Unbalanced Forces 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 Physical Science with Earth and Science Science students. It aligns with educational standard NGSS HS-PS2-1 (NGSS: HS-PS2-1; NRC/DCI: PS2.A; SEP/CCC: Models / Cause and effect; Common: HSN-Q.A; State refs: CA/NYSSLS same HS-PS PE family; FL SC.912.P.12; TX IPC force and motion strand.).