I like your handwriting boy
If it takes 1 year for this crab to travel 5,70km
Then, it will takes approximatly 1000/5,70 = 175 years to travel 1000 km
Potential energy is high and kinetic is equal i believe.
Mass is an independent quantity. It can neither be created nor be destroyed. So mass of giraffe will not change on moon.
That is the answer to the question
I hope this helps you.
Thank you for your question