# Two masses of 1 g and 4g are moving with equal kinetic energy. The ratio of the magnitudes of their momenta is

Two masses of 1 g and 4g are moving with equal kinetic energy. The ratio of the magnitudes of their momenta is

(a) 4 : 1

(b)$$\sqrt{2}:1$$

(c) 1: 2

(d) 1 : 16

$$p=\sqrt{2Em}$$
$${p_1\over p_2}=\sqrt{m_1\over m_2}$$
$${p_1\over p_2} =\sqrt { 1\over 4}={1\over 2}$$