Science 10 April 17 in-class Practice (id: 52b67fec5)

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[问答题]
Can the velocity of a18m cdbha pry,/jg,5r 1fevdvt 3uhg6 0i9xy; n object be negative when its accel- eration is positive? What about vice versa? If yes, give examples in each case3vux1e h; yvtdgi9 f60.

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