HS-PS2-2

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.

Performance Level Descriptions

PLDs communicate the knowledge and skills expected of students to demonstrate proficiency in each Learning Standard. NYS assessments classify student performance into one of five levels.

Level 5Level 4Level 3Level 2Level 1

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.

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.

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.

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.

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.

Resources

Examples and discussion of resources for the learning, teaching, and assessment of HS-PS2-2.

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Assessment

What assessment of HS-PS2-2 might look like on a NY state exam.

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

Disciplinary Core Ideas

Crosscutting Concepts

Page contributors: Caroline Leonard, Conrad Richman

Physics | HS. Forces and Interactions