
#1
Apr1808, 03:35 PM

P: 374

1. The problem statement, all variables and given/known data
A projectile is fired straight away from the moon from a base on the far side of the moon, away from the earth. What is the projectile's escape speed from the earthmoon system? 2. Relevant equations Escape velocity = sqrt[2GM/R] 3. The attempt at a solution What I'm wondering is, do I just have to use this formula the moon or do I have to take the gravitational potential energy of the earth and the projectile into account also? 



#2
Apr1808, 03:58 PM

P: 457




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