Physics: Forces And Motion: Units
Muhtasari
Before you can describe how fast something moves or how hard it pushes, you need a shared language of measurement. Physics uses the SI system - a set of standard units that scientists around the world agree on.
In this lesson you will learn the key units used in forces and motion, how to convert between common units, and why using the correct unit matters in calculations and exams.
Malengo
- Use the following units: kilogram (kg), metre (m), metre/second (m/s), metre/second2 (m/s2), newton (N), second (s) and newton/kilogram (N/kg)
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- The SI unit of force is the: A) Joule B) Watt C) Newton D) Pascal Answer: C
- Speed is measured in: A) m B) m/s C) m/s squared D) kg Answer: B
- To convert km/h to m/s, you: A) Multiply by 3.6 B) Divide by 3.6 C) Multiply by 1000 D) Divide by 60 Answer: B
- The SI unit for pressure is the: A) Newton B) Joule C) Pascal D) Watt Answer: C
- 1 kg is equal to: A) 10 g B) 100 g C) 1000 g D) 10000 g Answer: C
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Vitabu Vinavyopendekezwa
Jifunze zaidi kutoka vyanzo huria
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Sehemu ya kitabu
The Language of Physics: Physical Quantities and Units
Associate physical quantities with their International System of Units (SI)and perform conversions among SI units using scientific notation
"Physics: The Language of Physics: Physical Quantities and Units" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/physics/pages/1-3-the-language-of-physics-physical-quantities-and-units. Access for free at https://openstax.org/books/physics/pages/1-introduction
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