Question 102: Centre of Mass and Rotational Motion

Question

A body of mass $8 \mathrm{~kg}$ and another of mass $2 \mathrm{~kg}$ are moving with equal kinetic energy. The ratio of their respective momentum will be :

Accepted Answer

$P = \sqrt {2m\,KE} $
$ \Rightarrow {{{P_1}} \over {{P_2}}} = \sqrt {{{{m_1}} \over {{m_2}}}} $
$ = \sqrt {{8 \over 2}}  = {2 \over 1}$

Answer

1 : 1

Answer

2 : 1

Answer

1 : 4

Answer

4 : 1

Centre of Mass and Rotational Motion

A body of mass 8 \mathrm{~kg} and another of mass 2 \mathrm{~kg} are moving with equal kinetic energy. The ratio of their respective momentum will be :

Choose the correct answer: