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The law of conservation of linear mometu...

The law of conservation of linear mometum is a logical consequence of Newton's

A

First law of motion

B

Second law of motion

C

third law of motion

D

All the three laws

Text Solution

Verified by Experts

The correct Answer is:
B
Total momentum before collision
= Total momentum after collisions
`therefore0=-2phati+phatj+x`
Where x is the momentum of the third part
`thereforex=2phati-phatj`
`therefore` The magnitude of the momentum of the third part
`=sqrt(4p^2+(-p)^2)=sqrt(5p^2)=sqrt5p`
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