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Hi Simon Dionson 4I! So the uncertainty in velocity is given by a 5.0 m/s. Let's say the velocity given was 10 m/s. Then velocity COULD be 15 m/s OR 5 m/s. The range (in statistics) of this is the uncertainty in velocity. So the uncertainty in velocity—v— is equal to 10 m/s. It is not 5.0 m/s, as Amy Luu 3L has mentioned. I think there is an error in the solutions manual so use the following link to get the correct answer for this question: https://lavelle.chem.ucla.edu/wp-conten ... rs_7Ed.pdf. I hope this helps!
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