Energy transfer question (Use PE=KE or SUVAT ?)

[CannonSLX]

Homework Statement

Object falls from a tree which is 3m above the ground, what is its velocity when it hits the ground ?

Homework Equations

mgΔh=1/2mv²
or
s=vt-1/2at²

The Attempt at a Solution

Using the idea of PE=KE, as the masses cancel out I get an answer of V=7.66ms^-1
However I thought that this question can also be done with a suvat equation, I use the same condition which is used for KE [That U=0].

When attempting with suvat I get an answer of 17.15ms^-1 why is that ?

 

[gneill]

When attempting with suvat I get an answer of 17.15ms^-1 why is that ?

Hard to tell if you don't show your work!

 

[CannonSLX]

Hard to tell if you don't show your work!

Sorry, I just wanted to know if it was actually possible to be done using suvat ?

 

[gneill]

Sorry, I just wanted to know if it was actually possible to be done using suvat ?

Sure. And the answer should be the same

 

[CannonSLX]

Sure. And the answer should be the same

I just tried it again and looked like I forgot how to use my calculator , but I did get the same.

Thanks for confirming anyways :)