1.

A 9 kg mass and4kg mass are moving with equal kinetic energies. T he ratio of their momentum is

Answer»

<P>`1 :1`
`3:2`
`2:3`
`9:4`

Solution :Given that K.E. are equal `THEREFORE p_(1)^(2)/(2m_(1))=p_(2)^(2)/(2m^(2)) therefore p_(1)/p_(2)=sqrt(m_(1)/m_(2))=sqrt(9/4)=3/2`


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