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Forces and Motion

What are Scalar and Vector Quantities?

Some of the quantities (variables) that we have talked about
in the Forces and Motion chapter are scalars and some are vectors.

What is the Difference between a Scalar and a Vector?

A scalar (pronounced scay-lar) only has magnitude (size).
A vector has both magnitude and direction.

Examples of scalars are

density, energy, length, mass, power, speed and temperature.

Examples of vectors are

acceleration, displacement, force, momentum, velocity and weight.

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