4.3.83 - Momentum conservation in two dimensions

Understand how to apply conservation of linear momentum to problems in two dimensions.

Use - momentum conservation in two dimensions to connect the rule to the data and decision in the question.

This matters because - momentum conservation in two dimensions determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply - momentum conservation in two dimensions to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: - Momentum conservation in two dimensions is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.