1.3.17 - Work done

Be able to use the equation for work ∆W = F∆s, including calculations when the force is not along the line of motion.

Use - work done to connect the rule to the data and decision in the question.

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

Example: apply - work done to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: - Work done is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.