Question

a bomb at the rest explodes into two eqal masses then the peices will fly off​

Answer 1

Answer:

Explosion is due to internal forces . In law of conservation of linear momentum internal forces cannot change the momentum of the system . So after explosion m1v1+m2v2=0 or m1v1=-m2v2⇒ they will fly in opposite directions .

Answer 2

Answer:

The initial momentum is 0

Initial momentum = final momentum

Final momentum:

Resultant momentum for the two is.

Mass is constant and depends not on the direction.

12² + 9² = 225

The resultant velocity = √225 = 15m/s

Since the mass is equal we have.

Momentum = 15m

Let the velocity of the third one be v

The final momentum is = mv + 15m

0 = mv + 15m

-15m = mv

v = - 15

The velocity of the third one is :

15 m/s

Explanation:

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