What units are used to measure mass and weight?
A. Mass and weight are measured in kilograms.
B. Mass and weight are measured in newtons.
C. Mass is measured in kilograms, and weight is measured in newtons.
D. Mass is measured in newtons, and weight is measured in kilograms.
Answer (2)
Mass is the measure of the amount of matter and is measured in kilograms.
Weight is the force exerted on an object due to gravity and is measured in newtons.
The correct option is that mass is measured in kilograms, and weight is measured in newtons.
Therefore, the answer is: Mass is measured in kilograms, and weight is measured in newtons.
Explanation
Understanding the Problem The question asks us to identify the correct units for measuring mass and weight. Let's break down what mass and weight are and their corresponding units.
Defining Mass and Its Units Mass is a fundamental property of an object that measures the amount of matter it contains. The standard unit of mass in the International System of Units (SI) is the kilogram (kg).
Defining Weight and Its Units Weight, on the other hand, is the force exerted on an object due to gravity. It is calculated as the product of mass and the acceleration due to gravity ( w = m × g ). Since weight is a force, it is measured in newtons (N).
Conclusion Therefore, mass is measured in kilograms, and weight is measured in newtons.
Examples
Understanding the units of mass and weight is crucial in everyday life and physics. For example, when you weigh yourself on a scale, you're actually measuring the force exerted on you by gravity, which is your weight in newtons. However, scales often display this weight in kilograms, which is technically a measure of your mass. Knowing the difference helps in understanding concepts like buoyancy, where the weight of an object determines whether it floats or sinks, and in engineering, where precise calculations of mass and weight are essential for designing structures and machines.
Mass is measured in kilograms, while weight is measured in newtons. The correct option is therefore that mass is measured in kilograms, and weight is measured in newtons. This distinction is important in both physics and everyday life scenarios.
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