Lesson 1 Flashcards by Andrew Brott | Brainscape

Flashcards in Lesson 1 Deck (13)

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1

Physics

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

2

Sir Isaac Newton

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

3

Kinematics

Branch of mechanics that deals with the description of motion.

4

The Metric System

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

5

Dimensional Analysis

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

6

Significant Figure

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.

7

Vector

A quantity that has both magnitude and direction.

8

Scalar

A number

9

Scalar Multiplication

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.

10

Unit Vector

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

11

A=

ax(î)+ay(ˆj)

12

Speed

Not a vector

13

Dot Product (Scalar Product)

ÂxˆB=ABcosø