1.

A mass 'm' moves with a velocity '' and collides inelastically with another identical mass. After collision the Ist mass moves with velocity in a direction perpen-dicular to the initial direction of motion Find the speed of the 2nd mass after collision :

Answer»

V
`sqrt(3v)`
`2(sqrt(3))v`
`(v)/(sqrt(3))`

SOLUTION :Applying conservation of MOMENTUM `mv=mv_1 COS theta`
COD
`o=(mv)/(sqrt3)-mv_1sin theta`
`:. V_1=(2)/(sqrt3)v`


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