4.3.86 - Kinetic energy from momentum

Derive and use Ek = p²/(2m) for the kinetic energy of a non-relativistic particle.

Use - kinetic energy from momentum to connect the rule to the data and decision in the question.

This matters because - kinetic energy from momentum determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

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

Boundary: - Kinetic energy from momentum is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.