What Was the Initial Velocity of an Object That Traveled 120m in 5.60s?

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SUMMARY

The initial velocity of an object that traveled 120 meters in 5.60 seconds, reaching a final velocity of 15.0 m/s, is calculated to be 28 m/s. The relevant equations used include the formula for average velocity, v = d/t, and the acceleration formula, a = (v2 - v1) / (t2 - t1). The discussion highlights the importance of understanding acceleration in determining initial velocity, as the object was not at rest during the motion.

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Homework Statement


What was the initial velocity of an object that moved 120m in 5.60s, reaching a final velocity of 15.0m/s in that time?


Homework Equations


v=d/t
a=v2-v1/t2-t1



3. The Attempt at a Solution
I was wondering is there an acceleration that I'm missing here? or am i just off?
I've been using this eq. v1=v2-a(changeintime)
Someone help :(
 
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was the object at rest?
 
The book's answer is 28 m/s =S
 

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