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Two objects m1 and m2 are moving in the ...

Two objects `m_1 and m_2` are moving in the straight line approaching each other as shown. After collisions these objects together. What will be the velocity of the combined object after collisions?

Text Solution

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Let V be the velocity of combined object after collisions
Initial momentum =`m_1u_1-m_2u_2`
`=2 times 5-3 times 2=4 kg ms^-1`
Final momentum =`(m_1+m_2) V=(2+3) V=5V`
Using law of conservation of momentum
`implies 5V=4`
`V=4/5 implies V=0.8 ms^-1`
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