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## Homework Statement

I need to find the initial velocity of a rocket using the method a=[tex]\Delta[/tex]v/[tex]\Delta[/tex]t. Given a situation where [tex]\Delta[/tex]t = 4 seconds. The force of gravity in this case is -10(m/s)

## Homework Equations

After I get [tex]\Delta[/tex]v how do I turn that into the initial velocity?

## The Attempt at a Solution

a=[tex]\Delta[/tex] v/[tex]\Delta[/tex] t

-10=[tex]\Delta[/tex] v / 4 seconds

[tex]\Delta[/tex] v = -40 (m/s)