Science Homework Help

A proton (m_p = 1.673 × 10^–27 kg) and an electron (m_e = 9.109 × 10^–31 kg) are confined such that the x position of each is known to within 1.50 × 10^–10 m. What is the ratio of the minimum uncertainty in the x component of the velocity of the electron to that of the proton, Δv_e/Δv_p?