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Basic force concepts: scalars and vectors

Forces and motion • Force interactions

Key concepts

What you'll likely be quizzed about

  • Scalar quantities have only magnitude and no direction.
  • Examples include temperature, mass, and distance.
  • For instance, a temperature of 30 degrees Celsius indicates how hot it is, without any associated direction.
  • Scalars are typically represented by a single numeric value, which simplifies calculations in various applications, such as in physics and engineering.

Flashcards

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What is a scalar quantity?

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A scalar quantity is defined by its magnitude alone, without direction, such as mass or temperature.

Key notes

Important points to keep in mind

Scalars require only a number.

Vectors need both a number and direction.

Direction changes affect vector quantities only.

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