Difference between revisions of "HS-PS2-2"
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| + | {{Navlinks|HS-PS2-1|HS-PS2-3|← HS-PS2-1|HS-PS2-3 →}} | ||
{{learningstandard | {{learningstandard | ||
| + | | topic = Conservation of Momentum | ||
| ls = Use mathematical representations to support the claim that the total momentum of a system of objects is | | ls = Use mathematical representations to support the claim that the total momentum of a system of objects is | ||
conserved when there is no net force on the system. | conserved when there is no net force on the system. | ||
| cs = Emphasis is on the quantitative conservation of momentum in interactions and the qualitative meaning of this principle. | | cs = Emphasis is on the quantitative conservation of momentum in interactions and the qualitative meaning of this principle. | ||
| ab = Assessment is limited to systems of two macroscopic bodies moving in one dimension. | | ab = Assessment is limited to systems of two macroscopic bodies moving in one dimension. | ||
| + | }} | ||
| + | |||
| + | == {{Assessmentheading}} == | ||
| + | {{assessmentmessage}} | ||
| + | |||
| + | {| class="wikitable" style="width:100%; text-align:center" | ||
| + | ! style="padding: 0.5em 1.5em;" | Exam | ||
| + | ! style="padding: 0.5em 1.5em;" | Cluster | ||
| + | ! style="padding: 0.5em 1.5em;" | Question | ||
| + | |- | ||
| + | | style="background-color:white;" | [[June 2026 Physics Exam|June 2026 Physics Regents]] | ||
| + | | style="background-color:white;" | [[Questions:From Astro Blaster to Supernova|From Astro Blaster to Supernova]] | ||
| + | | style="background-color:white;" | [[Questions:From Astro Blaster to Supernova#q3|Question 38]] | ||
| + | |} | ||
| + | |||
| + | == Vocabulary == | ||
| + | Terms from the [[Physics Glossary]] that come from this standard or from the released exam questions that assess it. | ||
| + | |||
| + | <div class="vocab-subhead">From this standard</div> | ||
| + | <div class="vocab-list" style="column-width:14em;"> | ||
| + | * boundaries of a system | ||
| + | * boundary | ||
| + | * claim | ||
| + | * conservation of momentum | ||
| + | * direction | ||
| + | * force | ||
| + | * frame of reference | ||
| + | * initial conditions | ||
| + | * interaction | ||
| + | * macroscopic bodies | ||
| + | * mass | ||
| + | * mathematical representation | ||
| + | * momentum | ||
| + | * net force | ||
| + | * object | ||
| + | * one dimension | ||
| + | * qualitative | ||
| + | * quantitative | ||
| + | * speed | ||
| + | * support (a claim) | ||
| + | * system | ||
| + | * system of objects | ||
| + | * total momentum | ||
| + | * velocity | ||
| + | </div> | ||
| + | |||
| + | <div class="vocab-subhead">From released exam questions</div> | ||
| + | <div class="vocab-list" style="column-width:20em;"> | ||
| + | * [[Questions:From Astro Blaster to Supernova#q3|before and after collision]] – June 2026 | ||
| + | * [[Questions:From Astro Blaster to Supernova#q3|collision]] – June 2026 | ||
| + | * [[Questions:From Astro Blaster to Supernova#q3|computer simulation]] – June 2026 | ||
| + | * [[Questions:From Astro Blaster to Supernova#q3|law of conservation of momentum]] – June 2026 | ||
| + | * [[Questions:From Astro Blaster to Supernova#q3|rebound]] – June 2026 | ||
| + | * [[Questions:From Astro Blaster to Supernova#q3|refute]] – June 2026 | ||
| + | * [[Questions:From Astro Blaster to Supernova#q3|significant digits]] – June 2026 | ||
| + | * [[Questions:From Astro Blaster to Supernova#q3|simulation]] – June 2026 | ||
| + | </div> | ||
| + | |||
| + | {{PerformanceLevel}} | ||
| + | {{PLTable | ||
| + | | Level5 = Collect and analyze data and use mathematical representations to support the claim that the total momentum of a system of objects is conserved when there is no net force on the system. | ||
| + | | Level4 = Use mathematical representations to support the claim that the total momentum of a system of objects is conserved when there is no net force on the system. | ||
| + | | Example4 = <span class="pld-chip pld-chip-phys">[[Questions:From Astro Blaster to Supernova#q3|June 2026 · Q38]]</span> | ||
| + | | Level3 = Given data and/or a model, use a mathematical representation for the conservation of momentum to determine the mass and/or velocity of an object before or after an interaction between two objects when there is no net force on the system. | ||
| + | | Level2 = Given data and/or a model, use a mathematical representation to determine the total momentum, with or without direction, of a system of objects before or after an interaction when there is no net force on the system. | ||
| + | | Level1 = Given data and/or a model, use a mathematical representation for momentum to identify the mass, or the momentum (with or without direction), or the velocity/speed of an object. | ||
}} | }} | ||
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{{Dimensionstable | {{Dimensionstable | ||
| − | | SEP1 = | + | | SEP1 = Using Mathematics and Computational Thinking |
| − | | DCI1 = | + | * Use mathematical representations of phenomena to describe explanations. |
| − | | CC1 = | + | | DCI1 = PS2.A: Forces and Motion |
| + | * Momentum is defined for a particular frame of reference; it is the mass times the velocity of the object. | ||
| + | * If a system interacts with objects outside itself, the total momentum of the system can change; however, any such change is balanced by changes in the momentum of objects outside the system. | ||
| + | | CC1 = Systems and System Models | ||
| + | * When investigating or describing a system, the boundaries and initial conditions of the system need to be defined. | ||
}} | }} | ||
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| TOPIC = HS. Forces and Interactions | | TOPIC = HS. Forces and Interactions | ||
}} | }} | ||
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Latest revision as of 09:47, 18 October 2026
Use mathematical representations to support the claim that the total momentum of a system of objects is conserved when there is no net force on the system.
Clarification statement: Emphasis is on the quantitative conservation of momentum in interactions and the qualitative meaning of this principle.
Assessment boundary: Assessment is limited to systems of two macroscopic bodies moving in one dimension.
Regents Exam Questions
Released New York State Regents exam questions that assess HS-PS2-2 are listed here by exam and question cluster. Each link opens the question with its answer key.
| Exam | Cluster | Question |
|---|---|---|
| June 2026 Physics Regents | From Astro Blaster to Supernova | Question 38 |
Vocabulary
Terms from the Physics Glossary that come from this standard or from the released exam questions that assess it.
From this standard
- boundaries of a system
- boundary
- claim
- conservation of momentum
- direction
- force
- frame of reference
- initial conditions
- interaction
- macroscopic bodies
- mass
- mathematical representation
- momentum
- net force
- object
- one dimension
- qualitative
- quantitative
- speed
- support (a claim)
- system
- system of objects
- total momentum
- velocity
From released exam questions
- before and after collision – June 2026
- collision – June 2026
- computer simulation – June 2026
- law of conservation of momentum – June 2026
- rebound – June 2026
- refute – June 2026
- significant digits – June 2026
- simulation – June 2026
Performance Level Descriptions
Every Regents exam question on HS-PS2-2 is written to match one of the performance level descriptions (PLDs) below.
Level 1: Given data and/or a model, use a mathematical representation for momentum to identify the mass, or the momentum (with or without direction), or the velocity/speed of an object.
Level 2: Given data and/or a model, use a mathematical representation to determine the total momentum, with or without direction, of a system of objects before or after an interaction when there is no net force on the system.
Level 3: Given data and/or a model, use a mathematical representation for the conservation of momentum to determine the mass and/or velocity of an object before or after an interaction between two objects when there is no net force on the system.
Level 4: Use mathematical representations to support the claim that the total momentum of a system of objects is conserved when there is no net force on the system. June 2026 · Q38
Level 5: Collect and analyze data and use mathematical representations to support the claim that the total momentum of a system of objects is conserved when there is no net force on the system.
Resources
Examples and discussion of resources for the learning, teaching, and assessment of HS-PS2-2.
This section could be expanded upon. You can help out by adding to this section.
NGSS Dimensions
Performance expectation HS-PS2-2 was developed using the following elements from the NRC document A Framework for K-12 Science Education:
Science and Engineering Practices
- Using Mathematics and Computational Thinking
- Use mathematical representations of phenomena to describe explanations.
Disciplinary Core Ideas
- PS2.A: Forces and Motion
- Momentum is defined for a particular frame of reference; it is the mass times the velocity of the object.
- If a system interacts with objects outside itself, the total momentum of the system can change; however, any such change is balanced by changes in the momentum of objects outside the system.
Crosscutting Concepts
- Systems and System Models
- When investigating or describing a system, the boundaries and initial conditions of the system need to be defined.
Page contributors: Caroline Leonard, Conrad Richman