Posted by **Renka Jai** on Wednesday, October 17, 2012 at 5:55am.

How many newtons of force are necessary to accelerate a 0.0050 kg mass at the acceleration (a) of 9.81 m/s2 with the force expressed in the correct number of significant figures? (F = ma)

0.04905 N

0.049 N

0.05 N

4.91 × 102 N

Please help me :( It's just one little question.

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