CLASS - 11TH (Physics)
ch - Laws of motion
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Answer:
2.5m/s
Explanation:
From The Law Of Conservation Of Mass
m1u1+m2u2 = m1v1 + m2v2
2×0 + 1× 0 = 2 × V1 + 1× 5
2V1 = 5
V1 = 2.5
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