Flashcards in Outcomes 2.1 To 2.3 Deck (20):

1

## What can physics be defined as?

### It is the study of the interactions between energy and matter.

2

## What form is the most common and meaningful and efficient way to express a "rule of the universe"?

### In a form of a mathematical equation

3

## What is distance a quantity of?

### A scalar

4

## What is displacement a quantity of?

### A vector quantity

5

## What is time a quantity of?

### A scalar quantity

6

## What is speed a quantity of?

### A scalar quantity

7

## What is a scalar? 4

###
Are measurements that tells us only the magnitude of the quantity being measured

Scalars numbers tell us "how many"

The symbols used to denote scalars are usually letters.

Scalars can be added, subtracted, multiplied and divided, etc. JUST LIKE REGULAR NUMBERS

8

## What is a vector? 4

###
Are measurements that tell us the magnitude of the quantity being measured and the direction over which it is being measured.

The symbols see to denote vectors are usually letters with a small arrow above them.

Vectors can be added, subtracted and divided, etc. But must be modified to the process being used according to the direction attached to the quantity. YOU CANT TREAT VECTORS LIKE regular numbers

Vectors the tells us "how many" and "where"

9

## What is distance? 3

###
a scalar quantity that measures the space of an object as it moves through our 3 dimensional world

Is equal to the sum of the distances moved in any and all spatial dimensions/directions

Measured in SI base units called metres (m)

10

## What is displacement? 4

###
A vector quantity that measures the space of how an object moves through our 3 dimensional world

Is equal to the vector sum of the distances moved in any all spatial dimensions/directions

Measured a change in position (ie the ditance between the starting point and the ending point)

Measured in SI units called metres (m)

11

## What is time? 2

###
Is whenever objects move through spatial dimensions, they are also moving through the dimensions of time

Unlike spatial dimensions, all physical objects can only move in one direction through forward!

12

## What is velocity a quantity of?

### It is a vector quantity

13

## What is velocity? 2

###
Is a vector quantity that measures the displacement of an object in a given time

Expressed in SI base units called metres per second (ms-1)

14

## What is speed? 2

###
Is a scalar quantity that measures how far an object travels (distance) in a given time

Expressed in SI units called metres per second (ms-1)

15

## What is the symbol of "kind of velocity" when the "kind of speed" is "u"?

### U with an arrow on top

16

## What is the symbol of "kind of velocity" when the "kind of speed" is "v"?

### V with an arrow

17

## What is u and a u with an arrow on top defined?

### Initial speed/velocity of an object

18

## What is v and a v with an arrow on top defined?

### Final speed/velocity of an object

19

## What is Vavg and a Vavg with an arrow on top defined?

### Average speed/velocity of velocity

20