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Two particles of mass 1 kg and 2 kg are ...

Two particles of mass 1 kg and 2 kg are moving with speed 2 m/s and 5 m/s as shown in the figure, they collides perfectly inelastically. And second particle come to rest after collision. Find
(a) Their final velocity
(b) Loss in kinetic energy

Text Solution

Verified by Experts

`(a) vecv_(1)=vecv_(2)=(m_(1)u_(1)+m_(2)u_(2))/(m_(1)+m_(2))`
`=((1xx2-2xx5))/(1+2)`
`(-8)/(3)im//s`
`(b) Deltak=(1)/(2)((m_(1)m_(2))/(m_(1)+m_(2)))(vecu_(1)-vecu_(1))^(2)`
`implies1/2((1xx2)/(1+2))(2+5)^(2)=(49)/(3)J`
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