Physics Final Reviex

Front 1

resultant

Back 1

single force that has the same effect as 2 or more concurrent vectors

Front 2

components

Back 2

2 or more vectors that when added together, produce the original vector

Front 3

vector

Back 3

quantity using magnitude and direction

Front 4

scalar

Back 4

quantity measured in magnitude only

Front 5

distance

Back 5

change in position (w/o direction)

Front 6

displacement

Back 6

change in position in certain direction

Front 7

what are the 2 possible range of values of two vectors of 15N and 20N?

Back 7

5N and 35N

Front 8

what does the slope of a distance-time graph represent?

Back 8

velocity

Front 9

what does the slope of a velocity-time graph represent?

Back 9

acceleration

Front 10

velocity

Back 10

rate of change of position

Front 11

speed

Back 11

ratio of distance traveled to the time interval

Front 12

acceleration

Back 12

rate of change of velocity

Front 13

slope

Back 13

rise over run

Front 14

newtons 1st law

Back 14

(law of inertia) an object at rest tends to stay at rest and an object in motion tends to stay in motion w/ same speed and direction unless acted on by nt. ext. force

Front 15

newtons 2nd law

Back 15

(law of acceleration.)
when nt. ext. force acts on an object, the object accelerates so that the product of the mass and acceleration = nt. ext force

Front 16

newtons 3rd law

Back 16

(law of action reaction)
whenever 1 body exerts a force on the second body, the second body exerts an equal force in the opposite direction.

Front 17

law of universal gravitation

Back 17

the force of attraction b/t 2 bodie varies directly w/ the product of their masses and inversely with the square distance b/t their centers of gravity. (F=MA)

Front 18

mass

Back 18

quantity of matter in an object measured by it's resistance to change in it's motion(inertia)

Front 19

weight

Back 19

gravitational attraction of earth or celestial body to an object

Front 20

inertia

Back 20

tendence of an object not to change it's motion (due to mass)

Front 21

net force

Back 21

sum of forces acting on an object resulting in acceleration

Front 22

acceleration due to gravity

Back 22

freely falling bodies accelerate at the same rate (9.80)

Front 23

neglecting air resistance, all objects dropped will _____ at the ___ rate, regardless of weight.

Back 23

1.accelerate
2. same

Front 24

nt. external force is ___ proportional to acceleration

Back 24

directly

Front 25

mass is ____ proportional to acceleration

Back 25

inversely

Front 26

terminal velocity occurs when...

Back 26

force of weight=air resistance

Front 27

an object is moving at a circle in a constant speed, the force that is acting on it is directed ______

Back 27

towards the center

Front 28

an object that is moving in a circular path is accelerationg because it's _____ _______

Back 28

changing direction

Front 29

for a projectile, the horizontal motion is ____ and the vertical motion is _____

Back 29

1. uniform
2. accelerated

Front 30

the angle that maximizes the range of a projectile is ___ the angle that gives the same range as 30 degrees is ___

Back 30

45 degrees
60 degrees

Front 31

composition of forces

Back 31

finding the resultant of 2 components

Front 32

resolution of forces

Back 32

finding 2 components of a resultant

Front 33

friction ____ the motion of an object

Back 33

opposes

Front 34

calculation for net force?

Back 34

F=ma

Front 35

ratio of the force of friction to the force normal?

Back 35

mue

Front 36

can an object that has no net force acting on it be moving?

Back 36

yes, uniformly

Front 37

which trig function describes the coefficient of friction?

Back 37

tangent

Front 38

friction

Back 38

fprce opposing motion b/w 2 objects that are in contact

Front 39

coefficient of friction

Back 39

value describing nature of surfaces in contact

Front 40

normal force

Back 40

force perpendicular to a surface

Front 41

parallel force

Back 41

the component that pulls the object down a hill

Front 42

projectile

Back 42

an object that is thrown out or launched by some force acting on it that then continues in motion b/c of it's own inertia and is influenced by gravity

Front 43

in order for work to be done, an object must...

Back 43

move

Front 44

machine

Back 44

multiplies the force to make work easier by increasing the distance

Front 45

momentum is conserved in ___ collisions but kinetic energy is only consirved in _____ collisions

Back 45

1. all
2. elastic

Front 46

work

Back 46

product of force and displacement

Front 47

kinetic energy

Back 47

energy of an object due to it's motion

Front 48

potential energy

Back 48

energy of an object due to it's position or state

Front 49

momentum

Back 49

product of an object's mass and velocity

Front 50

power

Back 50

rate of doing work

Front 51

impulse

Back 51

product of the force and the time during which it acts

Front 52

energy

Back 52

capacity to do work

Front 53

elastic collisions

Back 53

collisions in which the total KE is the same before and after

Front 54

inelastic collisions

Back 54

collision in which some of the KE is changed to another form of energy

Front 55

conservation of energy

Back 55

energy cannot be created or destroyed- just changed in form

Front 56

conservation of momentum

Back 56

momentum cannot be created or destroyed

Front 57

impulse momentum change theorem

Back 57

Ft=m change in V

Front 58

closed system

Back 58

nothing enters or leaves

Front 59

rotational equilibrium

Back 59

cwt= ccwt

Front 60

translational equilibrium

Back 60

upward forces = downward forces

Front 61

objects are rotationally stable when the ___ of ___ is over the base of ___. the ___ the ____ of ___ and wider the base of ____, the more rotationally stable the object.

Back 61

1. center of gravity
2.support
3.lower
4.center of gravity
5. support

Front 62

which has more rotational inertia, the disk or the ring? (same diameter and mass)

Back 62

ring

Front 63

will the disk or the ring win the race down an incline?

Back 63

disk