GENERAL KNOWLEDGE

GK

PHYSICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What quantity does the kilogram measure?
A
time
B
distance
C
force
D
mass
Explanation: 

Detailed explanation-1: -kilogram (kg), basic unit of mass in the metric system. A kilogram is very nearly equal (it was originally intended to be exactly equal) to the mass of 1, 000 cubic cm of water. The pound is defined as equal to 0.45359237 kg, exactly.

Detailed explanation-2: -Mass is measured in kilograms; even though we usually talk about weight in kilograms, strictly speaking it should be measured in newtons, the units of force. Mass is a measurement of an object’s tendency to resist changing its state of motion, known as inertia.

Detailed explanation-3: -The kilogram (also kilogramme) is the unit of mass in the International System of Units (SI), having the unit symbol kg. It is a widely used measure in science, engineering and commerce worldwide, and is often simply called a kilo colloquially. It means ‘one thousand grams’.

Detailed explanation-4: -Mass is the measure of the quantity of matter in an object.

Detailed explanation-5: -It is defined as the mass of a particular international prototype made of platinum-iridium and kept at the International Bureau of Weights and Measures. It was originally defined as the mass of one liter (10-3 cubic meter) of pure water. At the Earth’s surface, a mass of 1 kg weighs approximately 2.20 pounds (lb).

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