1.

A stationary bomb explodes into three fragments. If the linear momentum of two A pieces are 4hati and 3hatJ unit respectively, then what is the value of the third fragment ?

Answer»

<P>7 UNIT
`sqrt(13)` unit
5 unit
6 unit

Solution :
`:. , p= sqrt(p_(1)^(2) + p_(2)^(2)) = sqrt(4hat(i)^(2)+ 3HAT(j)^(2))`
`:. , p=sqrt(16+9)= sqrt(25) = 5 units`


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