orbital speed

Hello, could someone kindly double check my math? Alternatively: is there a better place to post the request? My calculation: 50 gram mass (0.05 kg) Low Earth Orbit (~8 km/sec) Head on collision (relative velocity 16 km/sec) Kinetic Energy = 1/2 * mass * velocity_squared Kinetic energy...

Hello All, Brand new here and super excited to geek out with you all about all things Space 🤓 I was doing some research regarding the upcoming Mars Perseverance launch tomorrow (yay!) Came across Kepler's 2nd Law of Motion which seems to indicate that the planetary orbital speed changes with...