Which object has the greater mass?

Question:

Among the following objects, which one has the greatest mass?

• 1.25 kg of lead
• 1.25 kg of aluminum
• 1.25 kg of cotton
• 1.25 kg of feathers

Answer:

Of the given options, 1.25 kg of lead has the greater mass. Mass is a measure of the amount of matter in an object. It is usually measured in kilograms (kg).

In this case, we are comparing the mass of 1.25 kg of lead, 1.25 kg of aluminum, 1.25 kg of cotton, and 1.25 kg of feathers. We can see that they all have the same mass (1.25 kg) but different densities.

Explanation:

Density is the amount of mass per unit volume of an object, and it can vary depending on the material.

Lead is a very dense material, with a density of 11.34 grams per cubic centimeter (g/cm³). This means that for a given volume of lead, there is more mass than there would be for a less dense material like cotton or feathers.

Aluminum, on the other hand, has a density of 2.70 g/cm³, which is less than that of lead but still more than that of cotton or feathers.

Therefore, we can conclude that 1.25 kg of lead has the greatest mass among the given options.