How Does Acceleration Affect Final Velocity in an Elevator?

[Leo34005]

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

 

[tiny-tim]

Welcome to PF!

Hi Leo34005! Welcome to PF!

Use the standard constant acceleration equations.

Show us what you get. ​

 

[Leo34005]

I don't know what to put in

 

[tiny-tim]

I don't know what to put in

uh??

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?

 

[Leo34005]

1st?

 

[tiny-tim]

1st?

which one is that?

write it out! ​

 

[Leo34005]

v = u + at

 

[tiny-tim]

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

v = u + at

but you don't have the time!

 

[Leo34005]

v^2 = u^2 + 2as

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

 

[tiny-tim]

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?​

 

[Bacat]

Forgive me for butting in, but this does not belong in Advanced Physics. This is freshman physics. You might get more help over there.

 

[berkeman]

Thread moved to Intro Physics.

Show your work.

 

[Red_CCF]

v^2 = u^2 + 2as

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

ur close