Question

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

(a) 4:1

(b) √2:1

(c) 1:2

(d) 1:16

This question was addressed to me by my school teacher while I was bunking the class.

Asked question is from Coefficient of Restitution in section Gravitation of Engineering Physics I

Answer 1

Right answer is (c) 1:2

The best I can explain: p = √2mK

For same K, \(\frac{P_1}{P_2} = \sqrt{\frac{m_1}{m_2}} = \frac{1}{2}\) = 1:2.