Answers

2014-06-17T21:55:30+08:00
F=ma. Force's unit is Newton or kg · m/s²

9cm/s² must be converted first to m/s². 

1cm=100m 

so, 9cm/s² = 0.09 m/s²

substituting, 

F= (3kg)(0.09m/s²)
  = 0.27kg · m/s² or 0.27 N
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