Asked by meghagrao | 16th Aug, 2008, 05:09: PM

Expert Answer:

when the velocity of the body decreases, the rate change of velocity of the body per unit time is called retardation, if there is need to find retardation in the question it will automatically comes in negative sign. if it is given in question use negative sign.

Answered by  | 17th Aug, 2008, 09:45: AM

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