Football question (kinematics)

Homework Statement

A foot ball is kicked from a height of 2.0 m to a maximum height of 8.0m. Calculate the football's initial velocity and the time taken to reach the maximum height.

The Attempt at a Solution

I could solve it if i was given time, acceleration or vf or v i but only two variables are given and that too of the same. Can someone help me. I could assume vi is 0, but i have no idea how to approach this

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