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According to the question, a bowling ball of mass 8.00 kg is rolled down a bowling alley lane at 5.00+-5.0m/s, then since the position is + or - 5 from 5, isn't the spread/delta x 10.0? The solution manual used 5.0 so I was confused because I thought that delta x was the spread of uncertainty (2x the value being + or - from the measurement).
I'm not sure if you meant delta-V and wrote delta-X by mistake, but just to clarify this question is asking us to find the minimum uncertainty which is delta X. The two values given in the question tell us the mass and velocity of the bowling ball. Since the velocity is 5± 5m/s delta-V would be 10, not delta-X.
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