help with kilograms for earths surface

Question

 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

Answer 1

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.