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help with kilograms for earths surface

 about how much does 10 kilograms of anything weight at the earth's surface?
a.  10 N
b.  10 pounds
c.  100 N
d.  none of these
I think the anwer is d

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Philip P. | Effective and Affordable Math TutorEffective and Affordable Math Tutor
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Weight = mg
Where weight is in Newtons (N), m is the mass in kilograms = 10 kg, and g is the acceleration due to gravity = 9.8 meters/sec2
W = (10 kg)(9.8 m/sec/sec) = 98 N
Which is "about" 100 N.  Since the problem asks "about how much", the answer is c.