How High Does a Ball Go When Thrown Upward at 25m/s?

[JBemp]

Homework Statement

A ball is thrown stright up with the speed 25m/s
how high does the ball go?

Homework Equations

S=v*t or V=volt+at
I know gravity is a neg acceloration so I should have -9.81 somewhere

The Attempt at a Solution

I need to find the time first am guessing so, T=s/v but i don't know S ether just 25m/s and -9.81 I know this is most likly very simple but it just eludes me

 

[Doc Al]

You need to make use of the kinematic equations for accelerated motion: Basic Equations of 1-D Kinematics