What this tests
Syllabus point 1.4 — Density, in Motion, forces and energy. Difficulty easy (estimated from the question's demands, not a Cambridge rating).
Also set in
The same question, as Cambridge printed it in other papers.
Cambridge IGCSE Physics 0625 · 1.4 Density
June 2019 · Paper 23 · Question 18
One real Cambridge question from Motion, forces and energy, with the official answer. Cambridge has printed this question 5 times.