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Слайды и текст этой презентации

Слайд 1

Описание слайда:

University Physics I Forces Review of Basic Concepts

Слайд 2

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Vectors and Scalars All physical quantities (e.g. speed and force) are described by a magnitude and a unit. VECTORS – also need to have their direction specified examples: displacement, velocity, acceleration, force. SCALARS – do not have a direction examples: distance, speed, mass, work, energy.

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Representing Vectors An arrowed straight line is used. The arrow indicates the direction and the length of the line is proportional to the magnitude.

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Addition of vectors 1

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Addition of vectors 2 With two vectors acting at an angle to each other: Draw the first vector. Draw the second vector with its tail end on the arrow of the first vector. The resultant vector is the line drawn from the tail of the first vector to the arrow end of the second vector. This method also works with three or more vectors.