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A race car can be slowed with a constant acceleration of -11 m/s2...?

If the car is going 55 m/s, how many meters will it take to stop?

I'm a little confused, I got that the acceleration is -11 m/s2 and the velocity is 55m/s but when the car stops is the final velocity 0? And would we use that to find the distance with vi and vf?

I tried solving it out that way and got d=137.5 but I'm not sure if I used the right formula and if it's correct.

Someone explain please? Thanks in advance!

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