Final answer:
Akiko's weight is calculated using the formula Weight = Mass × Gravity, resulting in 539 Newtons when her mass is 55 kg and gravity is 9.8 m/s².
Step-by-step explanation:
The question asks how much Akiko weighs if she has a mass of 55 kg. Weight is a measure of the force exerted by gravity on an object and is calculated as the product of mass and the acceleration due to gravity (on Earth, approximately 9.8 m/s²). Since weight is a measure of force, its units are in Newtons (N).
To find Akiko's weight, we use the formula:
Weight (W) = Mass (m) × Gravity (g),
For Akiko:
W = 55 kg × 9.8 m/s² = 539 N.
Therefore, Akiko's weight is approximately 539 Newtons, which is the force with which she is attracted towards the Earth due to gravity. Note that in the context of physics, 'significant figures' refer to the precision of the numbers used in calculations. The mass of 55 kg has two significant figures, but in this case, we assume the standard value of gravity with high precision. Thus, our result for weight maintains an appropriate level of precision.