Heisenburg Uncertainty Principle - Seems like an easy question?? 1. The problem statement, all variables and given/known data The position of a 900 kg boulder's center of mass has been determined to within an uncertainty of 1.0 nm. (a) What is the minimum uncertainty in the boulder's velocity? (b) Repeat the calculation, but for a proton with the same uncertainty in position. (c) Repeat the calculation, but for an electron with the same uncertainty in position. 2. Relevant equations Δx*Δp ~ h Assuming that there is no uncertainty in the measurement of mass, Δx*mΔv = h where Δv is the uncertainty in the measurement of velocity. Δv = h / Δx *m h = 6.6256 *10^-34 J-s m = 900 kg for boulder mp = 1.6725*10^-27 kg for proton me = 9.1*10^-31 kg for electron. Δx = 1.0*10^-9 m 3. The attempt at a solution I did each of these the same way. Plugged in the variables using this equation: Δv = h / (Δx *m) The answers I got are: a. 7.36*10^-28 m/s b. 396.7 m/s c. 7.28*10^5 m/s I'm hoping I've made a silly error somewhere, but I've been unable to find it.