Lesson 1 Flashcards

(13 cards)

1
Q

Physics

A

The science that describes and explains the nature and behavior of physical systems

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2
Q

Sir Isaac Newton

A

1642-1727. Mathematician and Physicist, one of the most influential scientists of all time.

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3
Q

Kinematics

A

Branch of mechanics that deals with the description of motion.

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4
Q

The Metric System

A

International system of weights and measurements based on meter-kilogram-second

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5
Q

Dimensional Analysis

A

The analysis of the relationships between different physical quantities by identifying their fundamental dimensions and units of measure.

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6
Q

Significant Figure

A

Each of the digits of a number that are used to express it to the required degree of accuracy, starting from the first nonzero digit.

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7
Q

Vector

A

A quantity that has both magnitude and direction.

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8
Q

Scalar

A

A number

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9
Q

Scalar Multiplication

A

The multiplication of a vector by a scalar; the magnitude of a vector is scaled according to the scalar, but the direction remains the same.

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10
Q

Unit Vector

A

A vector length equal to one. î=x, ˆj=y

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11
Q

A=

A

ax(î)+ay(ˆj)

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12
Q

Speed

A

Not a vector

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13
Q

Dot Product (Scalar Product)

A

ÂxˆB=ABcosø

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