Free Printable WorksheetScienceGrade 9Science CurriculumNGSS HS-PS2-1

9.46 Newton's First Law and Inertia Worksheet

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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 9.46 Newton's First Law and Inertia. Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

Newton's First Law and Inertia: MCQ focus: apply inertia to everyday scenarios and predict motion when net force is zero. 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 Newton's First Law and Inertia: NGSS: HS-PS2-1; NRC/DCI: PS2.A; SEP/CCC: Constructing explanations / Stability and change; Common: RST.9-10.7; 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 9.46 Newton's First Law and Inertia skill assessments:

Problem 1Difficulty: Mastery

A car moves east at 20 m/s on a straight road. For a short interval, the engine force east exactly balances drag and rolling resistance west. What happens during that interval?

AThe car stops because the forces are balanced.

BThe car slows because drag exists even when balanced.

CThe car keeps moving east at 20 m/s.

DThe car speeds up because the engine is still on.

Solution & Explanation:When forward and backward forces balance, the net force is zero. The car's velocity remains constant while the balance holds.

Problem 2Difficulty: Mastery

Use the curved dot diagram. A puck's positions are equally spaced in time along a curved arc. What can you conclude?

AThe puck's mass must be increasing because the path bends.

BThe puck has no velocity because the path is curved.

CThe net force is not zero because the puck's direction changes.

DThe net force is zero because the dots are equally spaced.

Solution & Explanation:Equal spacing may show constant speed, but a curved path means direction changes. Changing velocity requires a nonzero net force.

Problem 3Difficulty: Mastery

Use the dot diagram. A puck's positions are marked at equal time intervals, and the dots are equally spaced along a straight line. What does the diagram indicate?

AThe puck is accelerating because it has several dots.

BThe puck has a backward net force because earlier dots are behind it.

CThe puck has no mass because the dots are equally spaced.

DThe puck has constant velocity, so the net force is zero.

Solution & Explanation:Equal spacing at equal time intervals along a straight line shows constant speed and direction. Constant velocity means zero net force.

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Frequently Asked Questions

Common questions about printing, using, and solving this worksheet

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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: Constructing explanations / Stability and change; Common: RST.9-10.7; State refs: CA/NYSSLS same HS-PS PE family; FL SC.912.P.12; TX IPC force and motion strand.).