SCIENCE
PHYSICAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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kilograms
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seconds and minutes
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Newton
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Joule
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Detailed explanation-1: -The Metric System of Measurements uses the mass units: gram (g), kilogram (kg) and tonne (t).
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 is the base unit of mass because electrical engineers in the late 19th century chose a particular set of practical electrical units. Their practical units were a success, and we are still using them today: ohm, volt, and ampere.
Detailed explanation-4: -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).