HS-PS2-2: Conservation of Momentum

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. (Systems and System Models)

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.

Disciplinary Core Ideas
PS2.A: Forces and Motion

Crosscutting Concepts
Systems and System Models


The following assessments were created by science teachers hoping to better understand the NGSS. In most cases teachers went from standard to assessment in around an hour.  These are drafts and should be used accordingly. Feel free to improve these assessments or contribute to the collection. Learn more about assessment design here.



Anchor Charts



Macroscopic bodies
Systems, Boundary, Objects
Interaction (collision or explosion)
Conservation of Momentum (2 objects 1 dimension)

Learning Plans

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