Need help solving some equation regarding velocity, distance

[Kenzo333]

Homework Statement

How to find acceleration and time if the given data is velocity and distance

Homework Equations

V = at
S = 1/2at2

The Attempt at a Solution

Sorry if I am in the wrong section, however I really don't know how to find the answer with the equations, please kindly provide me the with the explanation, thank you very much.

 

[WIN]

s/v = t and now can find a

 

[J Hann]

Don't you also have the equation (derivable from the given equations) : 2 a S = Vf^2 - Vi^2?

 

[haruspex]

s/v = t and now can find a

S=v/t is only valid when there is no acceleration. If there is (constant) acceleration then you need three pieces of information, any three of time, distance, initial velocity, final velocity. If the acceleration is not constant then you need even more.
Please post the whole question, word for word.

 

[WIN]

how about just combining the both?
v=at so a=v/t
then substitute it into the second equation. There you will get only 1 unknown in the second equation.