- 7,036
- 6,876
Hypothetically, if a Space ship in space were to fire a giant rod at a planet and the rod ablades during re-entry, can we apply the 11000 m/s speed to the rod for Kinetic Energy?
-
This forum is strictly intended to be used by members of the VS Battles wiki. Please only register if you have an autoconfirmed account there, as otherwise your registration will be rejected. If you have already registered once, do not do so again, and contact Antvasima if you encounter any problems.
For instructions regarding the exact procedure to sign up to this forum, please click here. -
We need Patreon donations for this forum to have all of its running costs financially secured.
Community members who help us out will receive badges that give them several different benefits, including the removal of all advertisements in this forum, but donations from non-members are also extremely appreciated.
Please click here for further information, or here to directly visit our Patreon donations page. -
Please click here for information about a large petition to help children in need.
Ablation Speed of Objects from Space Besides Meteors
- Thread starter Firestorm808
- Start date
- 7,675
- 1,371
The speed we use for meteors comes from them entering from the extremely distant reaches of Earth’s gravitational pull, so you’d need the ship to be positioned at similarly high distances. For reference, even at a distance of 100,000km from Earth’s surface the object would impact at speeds slightly below 11km/s.
If you know the distance it fell, calculating the PE is pretty easy with an integral calculator.
You want to integrate
G*M*m/x^2
Where G is the universal gravitational constant, M is the Earth’s mass, m is the object’s mass, and x is the variable for integration
Your lower limit should be 6371000 (Earth’s radius in meters) and the upper limit 6371000+y (Earth’s radius+the height dropped from in meters)
If you know the distance it fell, calculating the PE is pretty easy with an integral calculator.
You want to integrate
G*M*m/x^2
Where G is the universal gravitational constant, M is the Earth’s mass, m is the object’s mass, and x is the variable for integration
Your lower limit should be 6371000 (Earth’s radius in meters) and the upper limit 6371000+y (Earth’s radius+the height dropped from in meters)
