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

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Homework Help Overview

The discussion revolves around a physics problem involving identical guns firing bullets horizontally on Earth and the Moon, focusing on the effects of gravity on flight time, horizontal distance, and impact velocity.

Discussion Character

  • Exploratory, Assumption checking, Conceptual clarification

Approaches and Questions Raised

  • Participants explore the implications of gravity on flight time and distance, questioning which bullet stays in the air longer and how energy is gained during the flight.

Discussion Status

Some participants suggest that the bullet on the Moon remains in the air longer due to lower gravity, leading to a discussion about the truth of the statements regarding flight time and distance. There is ongoing questioning about the energy gained by the bullets and the validity of the impact velocity comparison.

Contextual Notes

Participants are considering the effects of gravitational differences between Earth and the Moon, and there is uncertainty regarding the interpretation of energy gain and its relation to the problem statements.

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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.
 
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a) Which falls faster?
b) Depends on ans of (a).
c) Which one gains more energy?
 
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?
 
Yes.
 
Ok but c) wouldn't be true right?
 
As I asked, where will it gain more energy, if at all?
 

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