To find the weight of a person on the Moon, you can use the formula:
\[ \text{Weight} = \text{mass} \times g \]
where:
- mass = 90 kg
- \( g_{moon} = 1.64 , \text{m/s}^2 \)
Now, substituting the values into the formula:
\[ \text{Weight} = 90 , \text{kg} \times 1.64 , \text{m/s}^2 = 147.6 , \text{N} \]
So the correct answer is:
C. 147.6 N