M2.4 - Collisions

Momentum as a vector.; The impulse-momentum principle in vector form.; Conservation of linear momentum.

Use momentum as a vector to connect the rule to the data and decision in the question.

This matters because momentum as a vector determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply momentum as a vector to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: Momentum as a vector is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.

Use Newton’s law of restitution for direct impact of elastic particles, with 0 ≤ e ≤ 1, and determine loss of mechanical energy.

Use direct impact of elastic particles to connect the rule to the data and decision in the question.

This matters because direct impact of elastic particles determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply direct impact of elastic particles to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: Direct impact of elastic particles is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.

Successive impacts of up to three Collision with a plane surface will not involve oblique particles or two particles and a impact. smooth plane surface.

Use successive impacts of up to three to connect the rule to the data and decision in the question.

This matters because successive impacts of up to three determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply successive impacts of up to three to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: Successive impacts of up to three is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.