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[" 1A particle starts with a velocity of...

[" 1A particle starts with a velocity of "2m/s" and move on a "],[" straight line with retardation of "0.1m/s^(2)" .The first time "],[" at which the particle is "15" metre from the starting point "],[" is "],[[" (a) "10sec," (b) "20sec," (c) "30sec," (d) "40sec]]

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