Physics Final Review

Front 1

What is physics?

Back 1

the study of energy

Front 2

What is the metric unit for mass, length, and volume?

Back 2

1. kilogram (kg)
2. m
3. L

Front 3

What is the difference between distance and displacement?

Back 3

Displacement has a direction (is a vector quantity).

Front 4

What does the slope of a displacement vs. time graph mean?

Back 4

it represents velocity

Front 5

What are you doing when you resolve a vector?

Back 5

breaking it into x and y components

Front 6

What is free fall?

Back 6

when only fg (gravitational force) is acting on an object

Front 7

What is the shape of the path of a ball that rolls off of a table?

Back 7

half of a downward facing parabola

Front 8

What are the five forces we use on a force diagram?

Back 8

1.normal
2.gravitational
3.applied
4.friction
5.tension

Front 9

What does the N in Fn stand for?

Back 9

normal

Front 10

What are the two kinds of frictional forces?

Back 10

1.static
2.kinetic

Front 11

How do we indicate the difference in frictional forces on a force digram?

Back 11

with a subscript of either s or k

Front 12

What is the difference between Ft and Fk?

Back 12

Ft (tension) is provided by a rope, cable or chain, Fa (applied) is provided by a rigid object, or can be any force that doesn't fall under the definition of the other 4

Front 13

State the rules used to complete a force diagram

Back 13

1.Define system
2.Shrink to a dot
3.Draw and label all forces
4.resolve those that are not on an axis
5.Mark equalities
6.Do the math

Front 14

Is the Fg always equal to Fn?

Back 14

No

Front 15

What is Newton's 2nd Law?

Back 15

Fnet=ma

Front 16

What is the difference between mass and weight?

Back 16

Mass is independent of gravity

Front 17

What is the difference between force and pressure?

Back 17

Pressure is a force distributed over an area

Front 18

What is Newton's 3rd Law?

Back 18

Every action has an equal and opposite reaction

Front 19

If all actions have equal and opposite reactions, how can acceleration take place?

Back 19

You can split the force pairs so that one is external to the system

Front 20

If a hammer hiting a nail is the action, what is the reaction?

Back 20

the nail hitting the hammer

Front 21

What are the only two factors that affect the amount of friction generated?

Back 21

Fn and the composition of the surfaces that are in contact

Front 22

What direction does frictional force point?

Back 22

Opposite of the possible motion

Front 23

What must be present for friction to occur?

Back 23

Surfaces in contact, an object with a force acting on it which would move the object in the absence of friction

Front 24

What generates more resistive force the maximum static or the maximum kinetic force?

Back 24

static

Front 25

What does the coefficient of friction mean and what is it used for?

Back 25

it signifies the "roughness" of a surface, it is used to calculate the force of friction generated in a set of circumstances

Front 26

Founders of the scientific method

Back 26

Galileo and Francis Bancon

Front 27

1. recognizing a problem
2. hypothesize
3. predict consequences
4. performe experiment
5. formulate general rule

These steps are part of what process?

Back 27

Scientific Method

Front 28

close agreement by competent observers who make a series of observations of same phenomenon

Back 28

fact

Front 29

uncontradicted and tested hypothesis

Back 29

law/principle

Front 30

synthesis of a large body of information that encompasses well-tested and verified hypotheses about certain aspects of the natural world *NOT FIXED, undergoes changes

Back 30

theory

Front 31

Parts of a Graph

Back 31

1. axes (x,y)
2. title
3. labels
4. units of measure
5. curve (line, pie, bar)
6. scale

Front 32

space traveled independently of starting and end point

Back 32

distance

Front 33

vector, space covered with respect to starting and end point

Back 33

displacement

Front 34

linearity

Back 34

curve is a straight line

Front 35

line starts at origin and both variables respond porportionately

Back 35

direct proportion

Front 36

vertical change divided by horizontal change for any part of the line

Back 36

slope

Front 37

curve is NOT linear, one variable is double the other value

Back 37

parabolic

Front 38

Change in velocity/time =?

Back 38

acceleration

Front 39

measure of how fast something is moving, the rate at which distance is covered

Back 39

speed

Front 40

speed at any instance

Back 40

instantaneous speed (spedometer on a car)

Front 41

total distance covered/time itnerval

Back 41

average speed

Front 42

speed in a given direction

Back 42

velocity

Front 43

rate at which velocity changes

Back 43

acceleration

Front 44

visual representation of vector quantity

Back 44

vector

Front 45

breaking resultant vectors into their horizontal and vertical components

Back 45

resolving vectors

Front 46

amount of matter an object has

Back 46

mass

Front 47

dependant on mass, "laziness" of object w/ mass

Back 47

inertia

Front 48

Newton's First Law

Back 48

objects at rest tend to stay at rest, while objects in motion tend to stay in motion unless acted upon by an outside force

Front 49

sum of all forces

Back 49

net force

Front 50

if there is no acceleration, there is no

Back 50

net force