This might be helpfull to some skydivers

[MrRick 0]

http://www.fearofphysics.com/

[PhillyKev 0]

Another good one is:

Fear of clicky links

[MrRick 0]

Iam here to learn how do i make a cliky link thanks

[juanesky 0]

Quote

clicky

"According to some of the conservatives here, it sounds like it's fine to beat your wide - as long as she had it coming." -Billvon

[PhillyKev 0]

Click on my link and all will be revealed.

[leroydb 0]

the site has problems

"Near the surface of the Earth (where we all are), gravity is a downward acceleration. Over time, it causes all [unsupported] objects to pick up a downward speed.
Since gravity is a persistant acceleration, falling objects keep falling faster and faster.
Gravity accelerates objects towards the earth at 9.8 meters per second per second
This means each second it falls, it will be traveling 9.8 meters per second faster
If something is dropped from 443.00 meters up, it will hit the ground in 9.51 seconds.
443.00 meters is 1453.41 feet. (0.28 miles)
It will be traveling at 93.18 meters per second when it hits the ground.
93.18 meters per second is 208.44 miles per hour (mph)."

You pick out the mistakes

Leroy


..I knew I was an unwanted baby when I saw my bath toys were a toaster and a radio...

[shmali 0]

Hehe,


So the basic problem is that this would be true in an ideal environment (ie no air resistance). But since this is not an ideal environment we have to take everything into account. So let's draw a free body diagram that shows all forces in perspective. (Fig 1.A).So current physic theories give us the relation for all the forces (1.B)

So we now see that the true speed (Terminal Velocity) of the falling object is both dependent on the mass of the object and the amount of drag it produces/encounters (the forces that act on it). In the ideal environment there would be no counter force (Drag) and the object wouldn't have a terminal velocity, it would continually accelerate over time v=at

This gives us the 208.44mph in 9.51 seconds.



Yea i'm bored, taking physics, and had nothing better to do. Comments, questions, suggestions?

Pineappe Death Juice, If you have to ask you'd rather not know!

[bobsled92 0]

All sorts of thoughts.
Marco did 340mph head down in a World Cup Speed Skydiving meet. So much for 208.

_______________________________
If I could be a Super Hero,
I chose to be: "GRANT-A-CLAUS". and work 365 days a Year.
http://www.hangout.no/speednews/

[fudd 0]

What kind of bogous site is this?
Look at http://www.fearofphysics.com/Shake/shake.html

The result of the experiment is true, but they fail completely to mention why.
Change the frequency of the slow shake a little bit, and you can have a whole different result.

There are only 10 types of people in the world. Those who understand binary, and those who don't.