[" The velocity of a body of mass "20kg]...

[" The velocity of a body of mass "20kg],[" decreases from "20m/s" to "5m/s" in a "],[" distance of "100m" .Force on the body is "],[[" (A) "-27.5N," (B) "-47.5N],[" (C) "-37.5N," (D) "-67.5N]]

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