A block at rest explodes into 3 parts are -2phatj and phatj. Calculate the magnitude of the momentum of third part.

A block at rest explodes into 3 parts are -2phatj and phatj. Calculate

1.	A block at rest explodes into 3 parts are -2phatj and phatj. Calculate the magnitude of the momentum of third part.
Answer» SOLUTION :Let `vecP` be the momentum of the third particle after the explosion of bomb. ACCORDING to law of conservation of momentum,`-2pvecj+pvecj+vecP``=0(or)vecP=2pveci-pvecj` `P=sqrt(2P)^(2)+(-p)^(2)=psqrt5`