A block of metal weighing 2 Kg is resting on a frictionless plane. It is struck by a jet releasing water at a rate of 1 kgs−1and at a speed of 5 ms−1. The initial acceleration of the block is
A
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B
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C
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D
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Solution
The correct option is D F = v dmdt F = 5 (1) = 5N ∴ a = Fm = 52m/s2