Flashcards in Semester 1 Final Deck (32)

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1

## speed

### how fast the object is moving

2

## velocity

### speed in a given direction

3

## position = _______________

### (velocity)(time) + starting position

4

## equation to find velocity

### change in position over change in time

5

## motion maps

### represents position, velocity, acceleration, of an object at various clock readings

6

## what do the dots represent on a motion map

### the objects position each second and velocity is represented the arrow

7

## acceleration

### a change in velocity in a given amount of time

8

## equation to find velocity

### acceleration = velocity final - velocity initial over time

9

## acceleration is a ______

### vector that can be positive or negative

10

## slope of a velocity time graph

### acceleration

11

## position time squared graph =

### 1/2 acceleration

12

## velocity position graph =

### 2(acceleration)

13

## acceleration due to gravity

### 9.8m/s2

14

## free fall equations

###
Vf= gt

delta xy = 1/2gt2

Vf2= 2adeltax

15

## vector

###
-arrow that show magnitude and direction

-length of arrow = magnitude

-point shows direction

16

## how do you add vectors together

### tip to tail method

17

## what are scalars

### magnitude only (ex. speed)

18

## vectors have both

### magnitude and direction

19

## velocity is a ______

### vector

20

## inertia

###
-object's resistance to a change in motion

-directly related to mass

21

## coefficient of friction

### value that indicates how much frictional force there is between two surfaces

22

## static friction

### force that opposes the start of any motion

23

## kinetic friction

### force that opposes motion once the object is moving

24

## static friction is always ________ than kinetic friction

### bigger

25

## depends on gravitational force and can change from location to location

### weight

26

## what something is made up of

### mass

27

## newtons law of universal gravitation

### any two objects attract each other with a gravitational force, proprtional to the product of their masses and inversely proportional to the sqaure of the distance between them

28

## what is the gravitational constant

### G= 6.67 x 10^-11

29

## law of universal gravitation aka

### inverse square law

30