Instruct: If the lorentz factor γ dt/dτ = e/mc 2 is √5 ≅ 2.236, what is the proper velocity w dx/dτ in units of c?
Output: SELECT Proper velocity w dx/dτ in units of c FROM table WHERE Lorentz factor γ dt/dτ = E/mc 2 = √5 ≅ 2.236