How Does Acceleration Affect Final Velocity in an Elevator?

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Homework Help Overview

The discussion revolves around a problem involving an elevator's motion, specifically how acceleration affects its final velocity. The elevator is initially moving upward and experiences a downward acceleration over a certain distance.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss the relevant equations for constant acceleration, with some suggesting the use of the equation v = u + at and others considering v^2 = u^2 + 2as. Questions arise regarding the appropriate variables to use and the need for time in the calculations.

Discussion Status

The conversation is ongoing, with participants exploring different equations and clarifying the variables involved. Some guidance has been offered regarding the equations, but there is no explicit consensus on the correct approach yet.

Contextual Notes

There is a note that the problem may have been miscategorized in the forum, indicating a potential mismatch in the expected level of physics knowledge required.

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Homework Statement


An elevator is moving upward at 0.97 m/s when it experiences an acceleration 0.33 m/s2 downward, over a distance of 0.61 m. What will its final velocity be?


Homework Equations



Not Sure

The Attempt at a Solution


Not Sure
 
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Welcome to PF!

Hi Leo34005! Welcome to PF! :smile:

Use the standard constant acceleration equations. :wink:

Show us what you get. :smile:​
 
I don't know what to put in
 
Leo34005 said:
I don't know what to put in

uh?? :confused:

you have the initial speed, the acceleration, and the distance, and you want the final speed …

which equation(s) do you think that would be? :smile:
 
1st?
 
Leo34005 said:
1st?

which one is that? :confused:

write it out! :smile:​
 
v = u + at
 
tiny-tim said:
you have the initial speed, the acceleration, and the distance, and you want the final speed …
Leo34005 said:
v = u + at

but you don't have the time!
 
v^2 = u^2 + 2as

Is that the right equation, if so what do i plug in?
 
  • #10
Leo34005 said:
v^2 = u^2 + 2as

Is that the right equation, if so what do i plug in?

if you're not just guessing, you should know what to plug in …

what do you think?​
 
  • #11
Forgive me for butting in, but this does not belong in Advanced Physics. This is freshman physics. You might get more help over there.
 
  • #12
Thread moved to Intro Physics.

Show your work.
 
  • #13
Leo34005 said:
v^2 = u^2 + 2as

Is that the right equation, if so what do i plug in?

ur close
 

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