Free Falling calculations

[CNBA3]

I am trying to find the calculation of what the Kinetic Energy would be for dropping objects from certain heights with regular gravity.

Anyone help me out with that?

 

[Assaltwaffle]

Potential energy is used to calc free falls.

PE = m*g*h where PE is potential energy in joules, m is mass in kilograms, g is gravitational acceleration (will be 9.8 m/s in most scenarios), and h is height in meters.

 

[CNBA3]

Potential energy is used to calc free falls.
PE = m*g*h where PE is potential energy in joules, m is mass in kilograms, g is gravitational acceleration (will be 9.8 m/s in most scenarios), and h is height in meters.

Ok, thanks, Would this website help as well?

http://hyperphysics.phy-astr.gsu.edu/hbase/flobj.html

Also, the terminal velocity of a human is 53 m/s, right?

 

[Assaltwaffle]

Yes, the object falling from rest is correct.

Also yes, terminal velocity is usually around 53 m/s.

 

[CNBA3]

Yes, the object falling from rest is correct.
Also yes, terminal velocity is usually around 53 m/s.

Thanks, one last question, kind of a ludicrous one, what would the speed and height be needed for if a human falling from a high place in order for that person to catch fire like a meteor? the person weighs 197.5 pounds.

 

[Assaltwaffle]

Not sure about height; probably outer atmosphere. Mach 5 is the point that that a person would catch fire under normal atmospheric conditions.

 

[CNBA3]

thank you

 

[Assaltwaffle]

No problem! Should this thread be closed now?

 

[CNBA3]

sure