Elliptical, because the shape of the galaxy isn’t like the others. It is unique to its own and doesn’t have another to compare to
30 minutes I am not sure about that
Initially, the velocity vector is
. At the same height, the x-value of the vector will be the same, and the y-value will be opposite (assuming no air resistance). Assuming perfect reflection off the ground, the velocity vector is the same. After 0.2 seconds at 9.8 seconds, the y-value has decreased by
, so the velocity is
.
Converting back to direction and magnitude, we get 
Answer: the earth
Explanation: ask your teacher