Calculate max height and t in max height?

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To calculate the maximum height and the time to reach that height for an object fired upwards at 3.000 m/s, the relevant formulas are derived from kinematic equations. The velocity at maximum height is 0 m/s, as the object momentarily stops before descending. Using the formula for maximum height, h = (v^2) / (2g), where v is the initial velocity and g is the acceleration due to gravity, the maximum height can be calculated. The time to reach maximum height can be found using t = v / g. Proper application of these formulas will yield the desired results.
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I need some help w/ this problem, u don't have to give me the whole thing maybe just the correct formulas for it. All your help is appreciated! Thanks!

If an object is fired up at a speed of 3.000 m/s at t= 0.0000s and reaches its max. height at time t. What is the velocity at the max. Height? g= -9.81 m/s/s. Calculate max height and t in max height?
 
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pleez just a little help!
 
You can use the formulas in this post.

Please don't post the same question several times.
 

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