Homework Statement
This is not a problem as such. Just a derivation for which I've been given a solution which I cannot seem to find.
Homework Equations
Ke = 1/2 mv2 = ρ2/2m
hbar << 2ΔxΔp
Δp≈p as the average magnitude of p is small.
The Attempt at a Solution
p >> hbar/2Δx
p2...