Flashcards in Chapter 2 Book Notes Deck (23)

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1

## What is displacement?

### The vector that points from point 1 to point 2

2

## What is average velocity?

### The displacement divided by time

3

## What is the formula for displacement?

### Delta X=x2-x1

4

## What is the formula for average velocity?

### (x2-x1) / (t2-t1)

5

## What is instantaneous velocity?

### The velocity at a specific point

6

## How do we find instantaneous velocity?

### delta x/ delta t... or the derivative of x with respect to t

7

## What is the difference between speed and velocity?

### Velocity is a vector while speed is not. Speed is represented by a v with no subscripts

8

## How do we find instantaneous x-velocity at a point?

### Find the tangent line to said point. Make sure the limit of delta x approaches zero

9

## What is acceleration?

### The rate of change of velocity with respect to time

10

## What is the formula for average acceleration?

### (V2x-V1x) / (t2-t1)... aka delta Vx/ delta t

11

## What is instantaneous acceleration?

### The limit of the average acceleration as the time interval approaches zero... or the derivative of velocity with respect to time

12

## What does the second derivative reveal?

### The concavity of a function..If it's concave up, the acceleration is increasing and vice versa.

13

## What is constant acceleration?

### Where the change in velocity is constant

14

## What is the formula for constant acceleration?

### (V2x - V1x) / (t2 - t1)

15

## What is the formula for constant acceleration if the initial time is zero?

### (vx - v0x) / t

16

## What is the formula for the total change in x velocity?

### vx = v0x - ax * t

17

## What is the formula for the x-position with constant acceleration?

### (x - x0) / t

18

## What is the formula for average velocity with constant acceleration?

### (v0x + vx) / 2 OR v0x + 0.5 * ax * t

19

## What is the formula for position combining the other formulas?

### x= x0 + (v0x * t) + (0.5) (ax) (t^2)

20

## What is time equal to with position and x velocity?

### t=(vx - v0x)/ ax

21

## What is free fall?

### The idea that objects fall at an equal rate regardless of their weight

22

## How do you find velocity from an acceleration function?

### Integrate it and add Vx0

23