Stuck with an acceleration problem

[Psyguy22]

I know this is quite simple question.
An object has an into all velocity of 50m/s it's traveling straight up. Assume g=-10m/s^2 how long does it take to go up and down?

I put these numbers into x=1/2at^2+vi*t but I still have 2 variables. X and T. Idk what to do.

 

[rock.freak667]

I know this is quite simple question.
An object has an into all velocity of 50m/s it's traveling straight up. Assume g=-10m/s^2 how long does it take to go up and down?

I put these numbers into x=1/2at^2+vi*t but I still have 2 variables. X and T. Idk what to do.

Well what does the variables x and t define? Which one would you like to solve?

Hint: If you start and end at the same position, your displacement is zero.

 

[Psyguy22]

Oh jeez.. Thank you. This is just a step in a bigger problem and I forgot how to do this part. Thank you rockfreak!

 

[SteamKing]

an into all = initial Must be some sort of code