Answers

2016-02-07T21:33:37+05:30
The average velocity becomes zero when retardation is in negative
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2016-02-07T21:37:36+05:30
The average velocity can be zero if the body moves in a circular path or the body is in equilibrium. As velocity is displacement divided by time ,when body moves in circular path there will be 0 displacement and hence, velocity will be zero
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