Help determining initial velocity

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valdez237
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im working on a lab and i have to determine the initial velocity of gliders that we pushed down an airtrack. the only data that was recorded is the change in x and time.

eg.
change in x = .3 meters
t= 1.1 seconds


i've looked through all the equations i could think of to find the answer to this, but they all require more than one variable. if i could even get the slightest bit of help that would be amazing.
 
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