Physics Final Exam: What is the speed of a spacecraft that crashes onto the surface of the moon Io?

Io is a moon of Jupiter. It has a mass of 8.9 x 10^22 kg and a radius of 1.8 x 10^6 meters. A spacecraft with a mass of 1111 kg has a velocity of ( 100, -112, 0 ) m/s at a distance of 3000 meters above the surface of Io. If the spacecraft crashed on the surface of Io (due to only the gravitational interaction), how fast would it be traveling on impact?
Code for part 1:
trinket.io/glo...
Code for part 2:
trinket.io/glo...

[@PaladineGirl]

Hey man, do you plan on doing some videos on electromagnetism and electromagnetic waves in the future? You're channel is a real gem!

[@fizixx]

I thought the previous one you did was fine.