Question 99: 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: