A car has an initial position of x= 0

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A car has an initial position of x= 0 m,an initial velocity of 0 m/s, and a constant acceleration of 4.4 m/s.What is its velocity when the time is 5.6 seconds? I know v=at, but do i do 4.4*5.6 or 4.4^2*5.6?

 

 

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