What is the initial velocity of a go-kart traveling at a uniform acceleration of 0.5 m/s^2 for 5s as it slows down to a stop?

The go-kart's velocity after time is given by

where is its initial velocity and is its acceleration. After , the go-kart stops completely, so

where because we know the go-kart is slowing down.

the entire statement is true and correct.  

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