Uploaded by Noisy Rapscallion

notes v30 Terminal Velocity & Geosynchronous Orbit

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Terminal Velocity
As an object free falls through the atmosphere it experiences a drag or air resistance that increases with
speed. Eventually the force form air drag = the force from gravity. This point is known as terminal
velocity. If the forces are equil then there is no net accelerating force and the velocity will stop
increasing. The falling object will continue at the “terminal velocity” for the rest of the fall. Following is
the equation for this calculation.
m=mass g=9.8 ρ=air density A= sectional area looking up at the falling object
Cd= drag coefficient (3d shape of the object)
Environmental issues can affect the air density. ( humidity, temperature, barometric pressure…)
Also the area A can be effected by a sky divers position
This sky diver will fall faster (smaller area A)
This sky diver will fall slower (larger area A)
This is a short video about terminal velocity
https://www.youtube.com/watch?v=p0IZsfzDS4s
Geosynchronous Orbit
A geosynchronous orbit is a high Earth orbit that allows satellites to match Earth's
rotation. Located at 22,236 miles (35,786 kilometers) above Earth's equator, this
position is a valuable spot for monitoring weather, communications and surveillance.
Because the satellite orbits at the same speed that the Earth is turning, the satellite
seems to stay in place over a single location on the ground. This make the
direction satellite dishes are pointing a fixed direction.
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