Question

la masa se mide en ______, y el peso se mide en ______.
options:
kilogramos, newtons
metros, libras
millas, volumen
pies, pulgadas

Explanation:

To solve this, we recall the units for mass and weight. Mass is a measure of the amount of matter, and its SI unit is kilograms (or grams, etc.). Weight is the force due to gravity, and in the metric system, force (including weight) is measured in newtons. Let's analyze each option:

• Option 1: "kilogramos" (kilograms) is a unit of mass, and "newtons" is a unit of force (weight). This matches the definitions.
• Option 2: "metros" is a unit of length, not mass or weight. "libras" is a unit of weight (in imperial), but "metros" is incorrect for mass.
• Option 3: "millas" is a unit of length, "volumen" is a measure of space, neither related to mass or weight.
• Option 4: "pies" and "pulgadas" are units of length, not mass or weight.

Answer:

A. kilogramos, newtons