Time to Reach Maximum Height of Projectile Launched at 450 m/s

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Homework Help Overview

The discussion revolves around a physics problem involving the time it takes for a projectile, specifically a bullet, to reach its maximum height after being launched vertically at a speed of 450 m/s. The context includes considerations of gravitational acceleration and the neglect of air resistance.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants discuss the use of different values for gravitational acceleration in their calculations, with one participant questioning the correctness of their approach and final answer.

Discussion Status

Some participants have confirmed the original poster's approach, while others have provided an alternative calculation using a different value for gravitational acceleration, indicating a divergence in interpretations of the problem.

Contextual Notes

There is a mention of ignoring air resistance, and participants are using different values for gravitational acceleration, which may affect their results.

Gughanath
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Hi...I done a question on velocity-time...I just wanted to amke sure if I am right...the question is: A soldier shoots a bullet vertically into the air at 450 m s^-1. How long does it take for bullet to reach maximum height...air resistance can be ignored...so I used v=u+at, my final answer was 45 seconds..am I right...please reply anyone :rolleyes:
 
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Assuming you're using 10 m/s^2 for g, yes.
 
I second that. You're doing okay.
 
Thanks a lot.
 
dude i just did that same question for homework but i got 46s cos i used -9.81m/s2 for acceleration :D
 
Last edited:

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