2025, Question 3 · Experimental Design and Analysis · 10 points · about 25 minutes
A block held in a pivoting box
Design measurements and graph data to investigate friction as a block moves in a box attached to a rotating rod.
This paper allotted 100 minutes to its four free-response questions. The current exam has 4 free-response questions in 95 minutes. The skills these questions practice still count.
Lessons this question draws on
1 Read the question
The question is College Board's, from the 2025 exam. It starts on page 9 of the PDF.
2 Write your answer
Answer each part the way you would on the exam, in full sentences, with your work shown. Your writing saves as you type.
3 Score it
Score your answer against College Board's scoring guidelines, one point at a time. Give yourself a point only when your answer says what the guideline asks for.
Scoring guidelines (PDF, page 7) What the exam readers saw (Chief Reader report)
Question, scoring guidelines and Chief Reader report: College Board. The title, summary are ours.