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Free fall with air resistance none linear model F
d
= f(v
2
)
System of units:
Example:
Find the final velocity of a skydiver falling from a height of 2000 meter the mass of the skydiver is 72 kilogram and the air resistance is 0.24 kilogram per meter.
Example:
An object with a mass of 0.15 kg is dropped from a height of 1 km, given that the air resistance is 0.24 kg/m. Find the terminal velocity and the falling time.
Example:
Find the drag force acting on an object travelling at a speed of 50 m/s in air whose density is 1.29 kg/m
3
the drag coefficient is 0.5 and the frontal area of the object is 0.8 m
2
.
Altitude (h):
cm
dm
ft
in
km
m
mm
yd
Air Resistance (k):
dag/cm
g/cm
g/mm
kg/cm
kg/dm
kg/m
lb/ft
lb/in
lb/yd
oz/ft
oz/in
oz/yd
Object Mass (m):
g
kg
lb
oz
ton
Gravity (g):
cm/s^2
dm/s^2
ft/s^2
in/s^2
m/s^2
yd/s^2
Falling Time (t):
h
min
s
Final Velocity (v
t
):
cm/s
dm/s
ft/s
in/s
km/h
m/h
m/min
m/s
mi/h
yd/s
Terminal Velocity (v
max
):
cm/s
dm/s
ft/s
in/s
km/h
m/h
m/min
m/s
mi/h
yd/s
Choose air resistance:
--- No Value chose ---
Skydiver
Drag Coefficient (C
d
)
Cross Section Area (A)
cm^2
dm^2
ft^2
in^2
m^2
mm^2
yd^2
Fluid Density (ρ)
dg/mm^3
g/cm^3
g/mm^3
kg/cm^3
kg/m^3
lb/in^3
lb/ft^3
lb/yd^3
Drag Force (F
d
)
dyn
gf
kgf
kN
lbf
N
ozf
tf
Air Resistance (k)
dag/cm
g/cm
g/mm
kg/cm
kg/dm
kg/m
lb/ft
lb/in
lb/yd
oz/ft
oz/in
oz/yd
Object Velocity (v)
cm/s
dm/s
ft/s
in/s
km/h
m/h
m/min
m/s
mi/h
yd/s
Choose drag coefficient:
--- No Value chose ---
Airplane Wing
Airplane Wing stalled
Avarag car
Bicycle
Bird
Bus
Cube
Dolphin
Flat plate
Flat plate turbulent
Flat plate facing stream
Hollow semisphere facing stream
Hollow semisphere opposite stream
Hollow semicylinder opposite stream
Long stream lined body
Long cylinder
Old Care T-ford
Person standing
Rectangular box
Ski jumper
Square flat plate facing stream
Solid Hemisphere facing stream
Solid Hemisphere opposite stream
Sphere
Streamline Body
Sphere
Subsonic aircraft
Supersonic Fighter
Thin disk facing stream
Truck
Choose substance density:
--- No Value chose ---
Air 20C
Air 0C
Ammonia
Argon
Butane
Carbon dioxide
Chlorine
Ethane
Ethylene
Helium
Hydrogen
Methane
Neon
Nitrogen
Oxygen
Ozone
Propane
Water 4C
water 20C
Water sea
Water vapor (steam)
Free fall with air resistance none linear model equations