Modelling Vertical Motion with a quadratic equation

One of the students in Scoil na Tríonóide Naofa is doing a classroom based assessment to investigate if the ball stays air borne for longer if the initial vertical velocity is higher. Explore what happens when you adjust all four sliders and then answer all of the questions below.
Investigate what factors determine how long the ball stays in the air.
What is the physical meaning of the starting height?
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Information: Modelling Vertical Motion with a quadratic equation