Calculate the uncertainty in velocity of a cricket ball of mass 150g if the uncertainty in its position is of the order of 1˚A (h=6.6×10−34kgm2s−1).
m=150×10−3kgΔx=10−10A0 h=planck's constant
Using Heisenburg Uncertainity Principle
Δx.mΔv≥h4πΔv=h4πmΔxΔv=6.626×10−344×3.14×10−10×0.15=3.5×10−24ms−1