Quick Help: Identical Guns Fired on Earth & Moon | 3 Possible Answers

[dominus96]

Homework Statement

Identical guns fire identical bullets horizontally at the same speed from the same height above level planes, one on the Earth and one on the Moon. Which of the following three statements is/are true?

a) The flight time is less for the bullet on the Earth.
b) The horizontal distance traveled by the bullet is greater for the Moon.
c) The velocity of the bullets at impact are the same.

I need to pick all the ones that apply. I think b)would be one, but I don't know what else, if any.

 

[Shooting Star]

a) Which falls faster?
b) Depends on ans of (a).
c) Which one gains more energy?

 

[dominus96]

The one on the moon stays in the air longer because of the much lower gravity, so does that mean both a) and b) are true?

 

[Shooting Star]

Yes.

 

[dominus96]

Ok but c) wouldn't be true right?

 

[Shooting Star]

As I asked, where will it gain more energy, if at all?