Grade 11 Physics: Projectile Motion Calculations

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    Grade 11 Physics
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Homework Help Overview

The discussion revolves around a Grade 11 physics problem related to projectile motion, specifically focusing on a bullet shot horizontally from a gun. The problem provides the bullet's speed and the height from which it is fired, asking for the time the bullet remains in the air.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants discuss the relationship between horizontal and vertical motion, questioning whether the time of flight is influenced by horizontal speed. There is an exploration of the concept of free fall in relation to the problem.

Discussion Status

The discussion is ongoing, with participants providing insights and prompting each other to think critically about the problem's assumptions. Some guidance has been offered regarding the independence of vertical and horizontal motion.

Contextual Notes

Participants express uncertainty about the appropriate formulas to use and the nature of the problem, indicating a need for clarification on fundamental concepts of projectile motion.

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Homework Statement



Ok, well I have a Grade 11 Physics question regarding Projectile Motion Calculations. The question is: A bullet is shot horizontally from a gun. If the bullet's speed exiting the muzzle is 325 m/s and the height of the gun above the ground is 2.0m,

a) how long was the bullet in the air?


The Attempt at a Solution



I see that a) is looking for the time. As well as, I have 325 which I assume is the velocity and 2.0m which I assume is the distance. Now this is the part I am stuck on. Which formula do I use to find Time? Sorry if my question seems stupid. I'm just in need for some help.

Thanks
 
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Think about what the problem is asking you. Does the time it takes for the bullet to fall vertically depend on how fast it is moving horizontally?
 
fss said:
Think about what the problem is asking you. Does the time it takes for the bullet to fall vertically depend on how fast it is moving horizontally?

Hmm ... well I guess it would? Sorry I'm a physics noob.
 
nope it doesnt. it just depends on vertical direction...now do you get a clue?
 
It is basically a free fall problem.
 

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