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A Race car starting from rest accelerates uniformmly at a rate of 4.9 m/s squared. What is the Car's speed? the answer is 44. (any number, they differ based on the website) They used different formulas to find the final velocity but all of them had one thing in common they had the number "2" in the formula. Which I have no idea where they got from. So my question is. "Where did they get the 2?"