Final answer:
The density of Jack's rock, with a mass of 14 g and volume of 2 cm³, is calculated to be 7 g/cm³, which is denser than the average density of granite at 2.70 g/cm³.
Step-by-step explanation:
The question asks about the density of a rock given its mass and volume. To find the density, we use the formula Density = Mass ÷ Volume. In this case, Jack has a rock with a mass of 14 g and a volume of 2 cm³.
Using the formula, we calculate the density as follows:
Density = 14 g ÷ 2 cm³ = 7 g/cm³.
This means the average density of the rock is 7 g/cm³. If we compare it to granite, which typically has a density of 2.70 g/cm³, this rock is more dense than granite.