A space traveller weighs herself on Earth at a location where the acceleration due to gravity is 9.81 m / s 2 9.81 m/s2 and finds a value of 557 N . 557 N. What is her mass?

Therefore the mass of the object is 56.78 kg.

Step-by-step explanation:

Mass: Mass of an object is physical property.Mass of an object can't change with respect to place.

The S.I unit of mass is Kg

But the weight of an object changes with respect to place.

Weight= mass× gravity

The gravitational force varies  place to place.

For this reason the weight of an object is not constant.

The value of g is 9.8 m/s².

Unit of weight:

Weight = mass × gravity

           =Kg×m×s⁻²

           =N

Given, weight= 557 N , g= 9.81 m/s² and mass=?

Weight = mass × gravity

⇒557= mass× 9.81

⇒mass= 56.7787≈56.78

Therefore the mass of the object is 56.78 kg.

1/4 and 8/3 because:

the reciprocal if 4 is 1/4 because 4 is used as 4/1 and the opposite of that is 1/4. the opposite of 3/8 is 8/3 so that is the answer.