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[" 21.A body is at rest at "x=0." At "t=...

[" 21.A body is at rest at "x=0." At "t=0," it starts moving in the "],[" positive "x" -direction with a constant acceleration.At the "],[" same instant another body passes through "x=0" moving "],[" in the positive "x" -direction with a constant speed.The "],[" position of the first body is given by "x_(1)(t)" after time "^(6)t'" ; "],[" and that of the second body by "x_(2)(t)" after the same time "],[" interval.Which of the following graphs correctly "],[" describes "(x_(1)-x_(2))" as a function of time "^(@)" t'? "]

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