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5.Work, Energy, Power and Collision
easy
Two bodies $A$ and $B$ having masses in the ratio of $3 : 1$ possess the same kinetic energy. The ratio of their linear momenta is then
A
$3:1$
B
$9:1$
C
$1:1$
D
$\sqrt 3 :1$
Solution
(d)$P = \sqrt {2mE} $
$\frac{{{P_1}}}{{{P_2}}} = \sqrt {\frac{{{m_1}}}{{{m_2}}}} $ (if $E =$ constant)
$\frac{{{P_1}}}{{{P_2}}} = \sqrt {\frac{3}{1}} $
Standard 11
Physics
