Answer:
Here, mass of shell = 30 kg
Initial velocity of shell
Total initial momentum
On exploding, mass of one part =
18 kg,
Hence, mass of other part = 30
-18 = 12kg (1)
The first part comes to rest,
i.e.,
Let the velocity of other part
Then total final momentum
(1)
Applying law of conservation of
momentum, we have
Total final momentum = Total
initial momentum
(1)
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