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Average Speed and Average Velocity

A ball is dro...

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A ball is dropped from an elevator moving upward with acceleration 'a' by a boy s†an ding in it.The acceleration of ball with respect to \lbrack take upward direction positive \rbrack a.Boy is -g b.Boy is -\lbrack g+a\rbrack c.Ground is -g d.both 2 and 3

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