Physics Final

Front 1

Definition of physics

Back 1

the study of the physical wolrd from motiona nd energy to light and electricity

Front 2

Physics uses scientfic method to...

Back 2

discover general laws that can be used to make prediction about a variety of different situations

Front 3

Kinetic enrgy

Back 3

energy due to an object’s motion
KE = ½ m v2
KE = kinetic energy (J)
m = mass (kg)
v = velocity or speed (m/s)

Front 4

work-kinetic energy theorem

Back 4

the net work done by the net
force on an object is equal to
the change in the object’s
kinetic energy

Front 5

potential energy

Back 5

energy due to an
object’s position, shape, or condition
(an object’s potential to move)

Front 6

two types p-energy 1.gravitational potential energy

Back 6

energy due to an object’s position
above Earth’s surface
PEg = m g h
PE Joules

Front 7

2.elastic potential energy

Back 7

energy
stored in any compressed or stretched
object (spring, rubber band,)PEelastic = ½ k x2
PEelastic = elastic potential energy (J)
k = spring constant (N/m)
x = compressed/stretched distance (m)

Front 8

mechanical energy

Back 8

the sum of kinetic
energy and ALL forms of potential
energy
ME = KE + PEg + PEelastic
ME = mechanical energy (J)
KE = kinetic energy (J)
PEg = gravitational potential energy (J)
PEelastic = elastic potential energy (J)

Front 9

conservation of mechanical energy:

Back 9

in the absence of friction, the total
mechanical energy remains the
same.
MEi = MEf
KEi + PEi = KEf + PEf
(½ m vi
2) + (m g hi) + (½ k xi
2) =
(½ m vf
2) + (m g hf) + (½ k xf
2

Front 10

power

Back 10

the rate at which work is done
P = W /
t
P = power (W = Watt)
W = work (J)

t = change in time (s)
P = F v
P = power (W = Watt)
F = force (N)
v = velocity or speed (m/s)

Front 11

momentum

Back 11

p = m v
p = momentum (kg m/s)
m = mass (kg)
v = velocity (m/s)

Front 12

impulse

Back 12

the product of the force
and the time over which the force
acts on an object
impulse = F
t
impulse = impulse (N s or kg m/s)
F = force (N)

t = change in time (s)

Front 13

impulse-momentum theorem

Back 13

the
impulse that an object experiences is
equal to its change in momentum
F
t =
p
F
t = mvf - mvi

Front 14

Law of Conservation of Momentum definition

Back 14

The total momentum of all objects
interacting with one another remains
constant regardless of the nature of
the forces between the objects.
total initial momentum = total final momentum
pAi + pBi = pAf + pBf
mAvAi + mBvBi = mAvAf + mBvBf

Front 15

Law of conservation of momentum rules

Back 15

conservation of momentum is only true for objects in an isolated system
disregard friction
• usually only use two-object systems
• the momentum lost by one object
equals the momentum gained by the
other object
• if the initial momentum is zero for
both objects, then their final
momentums must be equal and
opposite to add up to zero

Front 16

Definition of physics

Back 16

the study of the physical wolrd from motiona nd energy to light and electricity

Front 17

Physics uses scientfic method to...

Back 17

discover general laws that can be used to make prediction about a variety of different situations

Front 18

Kinetic enrgy

Back 18

energy due to an object’s motion
KE = ½ m v2
KE = kinetic energy (J)
m = mass (kg)
v = velocity or speed (m/s)

Front 19

work-kinetic energy theorem

Back 19

the net work done by the net
force on an object is equal to
the change in the object’s
kinetic energy

Front 20

potential energy

Back 20

energy due to an
object’s position, shape, or condition
(an object’s potential to move)

Front 21

two types p-energy 1.gravitational potential energy

Back 21

energy due to an object’s position
above Earth’s surface
PEg = m g h
PE Joules

Front 22

2.elastic potential energy

Back 22

energy
stored in any compressed or stretched
object (spring, rubber band,)PEelastic = ½ k x2
PEelastic = elastic potential energy (J)
k = spring constant (N/m)
x = compressed/stretched distance (m)

Front 23

mechanical energy

Back 23

the sum of kinetic
energy and ALL forms of potential
energy
ME = KE + PEg + PEelastic
ME = mechanical energy (J)
KE = kinetic energy (J)
PEg = gravitational potential energy (J)
PEelastic = elastic potential energy (J)

Front 24

conservation of mechanical energy:

Back 24

in the absence of friction, the total
mechanical energy remains the
same.
MEi = MEf
KEi + PEi = KEf + PEf
(½ m vi
2) + (m g hi) + (½ k xi
2) =
(½ m vf
2) + (m g hf) + (½ k xf
2

Front 25

power

Back 25

the rate at which work is done
P = W /
t
P = power (W = Watt)
W = work (J)

t = change in time (s)
P = F v
P = power (W = Watt)
F = force (N)
v = velocity or speed (m/s)

Front 26

momentum

Back 26

p = m v
p = momentum (kg m/s)
m = mass (kg)
v = velocity (m/s)

Front 27

impulse

Back 27

the product of the force
and the time over which the force
acts on an object
impulse = F
t
impulse = impulse (N s or kg m/s)
F = force (N)

t = change in time (s)

Front 28

impulse-momentum theorem

Back 28

the
impulse that an object experiences is
equal to its change in momentum
F
t =
p
F
t = mvf - mvi

Front 29

Law of Conservation of Momentum definition

Back 29

The total momentum of all objects
interacting with one another remains
constant regardless of the nature of
the forces between the objects.
total initial momentum = total final momentum
pAi + pBi = pAf + pBf
mAvAi + mBvBi = mAvAf + mBvBf

Front 30

Law of conservation of momentum rules

Back 30

conservation of momentum is only true for objects in an isolated system
disregard friction
• usually only use two-object systems
• the momentum lost by one object
equals the momentum gained by the
other object
• if the initial momentum is zero for
both objects, then their final
momentums must be equal and
opposite to add up to zero

Front 31

Definition of physics

Back 31

the study of the physical wolrd from motiona nd energy to light and electricity

Front 32

Physics uses scientfic method to...

Back 32

discover general laws that can be used to make prediction about a variety of different situations

Front 33

Kinetic enrgy

Back 33

energy due to an object’s motion
KE = ½ m v2
KE = kinetic energy (J)
m = mass (kg)
v = velocity or speed (m/s)

Front 34

work-kinetic energy theorem

Back 34

the net work done by the net
force on an object is equal to
the change in the object’s
kinetic energy

Front 35

potential energy

Back 35

energy due to an
object’s position, shape, or condition
(an object’s potential to move)

Front 36

two types p-energy 1.gravitational potential energy

Back 36

energy due to an object’s position
above Earth’s surface
PEg = m g h
PE Joules

Front 37

2.elastic potential energy

Back 37

energy
stored in any compressed or stretched
object (spring, rubber band,)PEelastic = ½ k x2
PEelastic = elastic potential energy (J)
k = spring constant (N/m)
x = compressed/stretched distance (m)

Front 38

mechanical energy

Back 38

the sum of kinetic
energy and ALL forms of potential
energy
ME = KE + PEg + PEelastic
ME = mechanical energy (J)
KE = kinetic energy (J)
PEg = gravitational potential energy (J)
PEelastic = elastic potential energy (J)

Front 39

conservation of mechanical energy:

Back 39

in the absence of friction, the total
mechanical energy remains the
same.
MEi = MEf
KEi + PEi = KEf + PEf
(½ m vi
2) + (m g hi) + (½ k xi
2) =
(½ m vf
2) + (m g hf) + (½ k xf
2

Front 40

power

Back 40

the rate at which work is done
P = W /
t
P = power (W = Watt)
W = work (J)

t = change in time (s)
P = F v
P = power (W = Watt)
F = force (N)
v = velocity or speed (m/s)

Front 41

momentum

Back 41

p = m v
p = momentum (kg m/s)
m = mass (kg)
v = velocity (m/s)

Front 42

impulse

Back 42

the product of the force
and the time over which the force
acts on an object
impulse = F
t
impulse = impulse (N s or kg m/s)
F = force (N)

t = change in time (s)

Front 43

impulse-momentum theorem

Back 43

the
impulse that an object experiences is
equal to its change in momentum
F
t =
p
F
t = mvf - mvi

Front 44

Law of Conservation of Momentum definition

Back 44

The total momentum of all objects
interacting with one another remains
constant regardless of the nature of
the forces between the objects.
total initial momentum = total final momentum
pAi + pBi = pAf + pBf
mAvAi + mBvBi = mAvAf + mBvBf

Front 45

Law of conservation of momentum rules

Back 45

conservation of momentum is only true for objects in an isolated system
disregard friction
• usually only use two-object systems
• the momentum lost by one object
equals the momentum gained by the
other object
• if the initial momentum is zero for
both objects, then their final
momentums must be equal and
opposite to add up to zero