Problem
Imagine a universe in which Planck’s constant h = .60 J.s
consider a .50 kg baseball that is moving at 20 m/s along an axis
if the uncertainty in its speed is 0.5 m/s, what is the uncertainty in its position?
?p = (.5 kg)(0.5 m/s) = .25 kg.m/s
?x? h /(?p) = (.60/2?)/.25 = .38 m