Solution

Question\n\nAn iron sphere whose mass is $30\,\mathrm{kg}$ has the same diameter as an aluminium sphere whose mass is $10.5\,\mathrm{kg}$. The spheres are simultaneously dropped from a cliff. When they are $10\,\mathrm{m}$ from the ground, they have identical:\n\nContent coming soon. Write the full solution here, or use the part files (p-i.mdx, p-ii.mdx, …) for each part.