system
Given the following post, respond as if you're commenting on Reddit:
human
[Space Engineers] My ship weighs 65 million kilograms, how much damage would it do to a planet in real life if I were to crash into an Earth like planet?
gpt
Kinetic Energy calculations are E_k = 0.5 * mv^(2), with the units of J, kg and m/s respectively.

We need to figure out what the velocity of your ship would be crashing in. The fastest speed ever recorded by a plane is 7,200 km per hour, so let's use that speed and assume you ship isn't going to be destroyed by the atmosphere. 7,200 kph is the same as 2000 meters per second.

So plugging in, we have E_k = 0.5 * 65,000,000 kg * 2000^2 m/s = 1.3 * 10^14 J. That's nowhere close to the impact that wiped out the dinosaurs (4.2 * 10^23 J), but asteroids also hit the earth at 16 to 32 kilometers per second. If we assume the average of 24 kilometers per second (24,000 m/s) the energy would be 1.87 * 10^16 J, which is still not nearly as much energy.

If we want to match the energy of the mass-extinction asteroid we all know and love, we would have to travel at 1.14 * 10^8 meters per second (the speed of light being around 3 * 10^8 m/s).

Going back to the 1.87 * 10^16 J number, that's about the energy released during an earthquake close-but-over 7.6 on the richter scale.