A block of metal weighing 2kgis resting on a frictionless plane. It is struck by a jet releasing water at a rate of 1 kgs-1 and at a speed of 5 ms-1. The initial acceleration of the block is
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a
53ms−2
b
254ms−2
c
266ms−2
d
52ms−2
answer is D.
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Detailed Solution
Force on block =vdmdt Acceleration of block =FM=vMdmdt=52×1=52m/s2