Deimos, a moon of mars, is about 12 km in diameter with mass 1.5ã—1015kg. 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!
part a
with what speed would you have to throw a baseball so that it would go into a circular orbit just above the surface and return to you so you could hit it?
express your answer with the appropriate units.
part c
how long (in hours) after throwing the ball should you be ready to hit it?

A) 4.1 m/s C) 2.6 hrs

Explanation:

(Ignore the As in the equation, I don't know why those are showing up)

A) The force of gravity equals

The force of gravity also equals

Set these equations equal to one another, let be the mass of the ball and be the mass of Deimos.

G is

Use 6000 m for r (diameter divided by 2)

After plugging in numerical values (the mass of the ball cancels out

) the answer is 4.1 m/s

C)

Use the value obtained from part A for v. Use 6000 m for r. Divide the answer from this formula by 3600 to get the correct units (hours).