Physics 3Rd Quarter

Front 1

effects of force

Back 1

causes an object at rest to start moving
causes a moving object to stop
changes the direction of the object
causes deformation to an object

Front 2

a physical quantity that is capable of changing an object's state of motion

Back 2

net force or unbalanced force

Front 3

vector sum or the resultant of all the forces actimg on an object or system

Back 3

net force

Front 4

unbalanced force that results to acceleration

Back 4

net force

Front 5

interacting objects are physically in contact with each other

Back 5

contact force

Front 6

interacting objects are not physically in contact with each other yet are able to exert a push or pull despite the physical seperation

Back 6

noncontact

Front 7

4 fundamental forces

Back 7

gravitational
electromagnetic force
weak force
stromg force

Front 8

force whose strenght is affected by mass and distance

Back 8

gravitational

Front 9

force that gives materials theur strength, gives them the ability to be bent and squeezed

Back 9

electromagnetic force

Front 10

applications of electromagnetic force

Back 10

can be transmitted across space
binda one atom to another to form molecules and compounds
keeps electrons to moce around the nucleus of an atom
may be harmful
electricmotor
photocopier machine

Front 11

a force that is a form of electromagmetic force

Back 11

weak force

Front 12

weak force is exerted berween a class of particles called?

Back 12

leptons (electrons)
hadrons ( protons amd neutrons)

Front 13

it tends to cause nuclei and elementaty particles to break up and become unstable

Back 13

weak force ( instability causes beta decay)

Front 14

strongest force but effective only at very short seperations

Back 14

strong force

Front 15

acts only on hadrons

Back 15

strong force

Front 16

keeps nucleus of an atom intact

Back 16

strong force

Front 17

tremendous force is necessary to overcome this type of force

Back 17

strong force

Front 18

he divided motion into 2 kinds

Back 18

aristotle

Front 19

2 kind of motion accdg to aristotle

Back 19

natural
violent

Front 20

accdg to him, if there is no friction, a moving object will keep on moving in a straight line forever

Back 20

galileo galilei

Front 21

1st to introduce the concept of inertia

Back 21

galileo galilei

Front 22

a natural tendency of an object to maintain a state of rest or to maintain in motion in constant speed in a straight line

Back 22

inertia

Front 23

galileo's work influenced who?

Back 23

sir isaac newton

Front 24

3 laws if motion

Back 24

law of inertia
law of interaction
law of acceleration

Front 25

directly proportional to the net force applied to the object but inversely proportional to the mass of the object

Back 25

acceleration

Hint 25

fnet / mass

Front 26

law of interaction is also known as....?

Back 26

action-reaction law

Front 27

law that says forces come in pairs

Back 27

law of interaction

Front 28

mass in motion

Back 28

linear momentum

Front 29

a vector quantity whose direction is in the direction of the velocity

Back 29

linear momentum

Front 30

momentum is a latin word which means??

Back 30

moving or moving power

Front 31

first to use the term progress

Back 31

gottfried wilhelm von leibniz

Front 32

theorem used by highway safety engineers to determine stopping times

Back 32

impulse - momentum theorem

Front 33

considered as one of the most important principles in physics as it presents analysis of situation wherein collisions are involved

Back 33

conservation of momentum

Front 34

negative ratio of the relative velocity of the two colliding bodies after impact to the relative velocity before impact

Back 34

coefficient of restitution

Front 35

both momentum and kinetic energy are conserved

Back 35

elastic 1

Front 36

momentum is conserved. ke final is leas than ke initial

Back 36

inelastic 0-1

Front 37

momentum is conserved. maximum kinetic energy is lost

Back 37

perdectly inelastic 0

Front 38

a force that reaiata motion whenever 2 materials or media are in contact with each other

Back 38

frictional force

Front 39

2 main causes of friction

Back 39

mainly by mechanical interlocking of irregularities on the two surfaces in contact
tendency of materials in very close contact with each other to stick together

Front 40

types of friction

Back 40

dry friction
fluid friction
skin friction
internal friction

Front 41

resists relative lateral motion between 2 surfaces in contact

Back 41

dry friction

Front 42

friction found in nonmoving objects

Back 42

static friction

Front 43

friction found in moving objects

Back 43

kinetic friction

Front 44

difficult to analyze

Back 44

rolling friction

Front 45

friction between layers of a viscous fluid that are moving relative to one another

Back 45

fluid friction

Front 46

a component of a drag force, a force resisting the motion or a solid moving through a fluid

Back 46

skin friction

Front 47

force resisting motion between the elements making up a solid material while it undrgoes deformation

Back 47

internal friction

Front 48

effects of friction

Back 48

increases work necessary
kinetic to heat energy
causes wear and tear
gives difficulty in moving objects

Front 49

ways to reduce friction

Back 49

streamlining
application of a thin film of soil/ lubrication
use of ball bearing or roller bearing

Front 50

states that friction is directlt proportional to the applied force

Back 50

amanton's first law

Front 51

states that force of friction is independent of the sliding velocity

Back 51

columb's law of friction

Front 52

greater than kinetic friction

Back 52

static friction

Front 53

proportional to the normal force pressing the surface togeher

Back 53

friction

Front 54

solids whose particles are arranged in definite patterns

Back 54

crysatlline

Front 55

do not form crystalls, their atomic arrangement is intermediate between that of disordered liquid and that of highly organized crysatlline solid

Back 55

amorphous

Front 56

tendemcy of liquids surface to behave like taut skin

Back 56

surface tension

Front 57

decrease the effects of surface tension in the water

Back 57

surfactants

Front 58

superfluids

Back 58

bose einstein condensate
fermionic condensate

Front 59

ability of the material to undergo temporary change

Back 59

elasticity

Front 60

results from the application of force

Back 60

stress in pascal n/m^2

Front 61

4 types of stresses

Back 61

tensile
compressive
shear
volume

Front 62

product of stress

Back 62

strain

Front 63

shows the direct relationship between stress and strain

Back 63

hooke's law

Front 64

is the maximum stress that will not produce permanent deformation

Back 64

elastic limit

Front 65

maximum stress thatbthe object can withstand

Back 65

ultimate strength

Front 66

ratio of the object's mass to its volume

Back 66

density

Front 67

used to obtain accurate measurements of density

Back 67

pycnometer

Front 68

ahow the load capacity of a vessel

Back 68

plimsoll lines

Front 69

allows submarines to sink or float on water

Back 69

ballast tanks

Front 70

ratio of the density of a substance and density of water

Back 70

specific gravity

Front 71

fluids at rest

Back 71

hydrostatics

Front 72

any flowing sunstance that offer little resistance to a change in its shape both liquids and gases are considered

Back 72

fluids

Front 73

pressure instruments

Back 73

mercury manometer
aneroid barometer
bourdon tube pressure gauge
sphygmomanometer

Front 74

any change of pressure in an enclosed fluid at rest is transmitted undiminished to all parts of the fluid

Back 74

pascal's principle

Front 75

a body submerged in a fluid is buoyed up by a force equal in magnitude to the weight of the displaced fluid.

Back 75

archimedes' principle and bouyancy