Answer:
Mass
of cracker ;
Initially cracker is at rest, u = 0
Initial momentum of the
cracker = mu =0
After explosion, mass of each piece
Let velocity of first
piece
and velocity of second
piece
Momentum of cracker after
explosion
(1)
According to law of conservation momentum,
The negative sign shows that and are equal in magnitude and opposite
in direction.
Thus, two pieces of the cracker fly in opposite directions
with same speed. (1)
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