Velocity and Gravity Problem. Basic question. NEED HELP

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To throw a baseball into orbit on Deimos and have it return, a speed of approximately 3.334 m/s is required. This calculation uses the formula v^2 = GM/R, where G is the gravitational constant, M is the mass of Deimos, and R is its radius. The diameter of Deimos is about 12.0 km, leading to a radius of 6.0 km for the calculation. A brief exchange highlights a misunderstanding regarding the difference between radius and diameter. Understanding these concepts is crucial for solving orbital mechanics problems.
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1. Deimos, a moon of Mars, is about 12.0 in diameter, with a mass of 2.00×1015 . Suppose you are stranded alone on Deimos and want to play a one-person game of baseball. You would be the pitcher, and you would be the batter!

With what speed would you have to throw a baseball so that it would go into orbit and return to you so you could hit it?



2. v^2=GM/R



3.v = sqrt(6.67*10^-11*2*10^15/12000)
v = 3.334 m/s
 
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PhysicsScrub said:
1. Deimos, a moon of Mars, is about 12.0 in diameter, with a mass of 2.00×1015 . Suppose you are stranded alone on Deimos and want to play a one-person game of baseball. You would be the pitcher, and you would be the batter!

With what speed would you have to throw a baseball so that it would go into orbit and return to you so you could hit it?



2. v^2=GM/R



3.v = sqrt(6.67*10^-11*2*10^15/12000)
v = 3.334 m/s
Hi PhysicsScrub, Welcome to Physics Forums.

What's the difference between radius and diameter? :wink:
 
gneill said:
Hi PhysicsScrub, Welcome to Physics Forums.

What's the difference between radius and diameter? :wink:

Facepalm... ahah. thanks dude.
 

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