Question

Maric, Einstein, and Meitner were tired and decided to take a break from skating. Einstein offered to carry all three pairs of skates back to the rental counter. If each pair of skates weighed 16 N, what was the total mass of all three pairs of skates?

Answer 1

Einstein carried a total mass of 4.90 kg to the rental counter.

Step-by-step explanation:

Weight and Mass

Those are commonly mixed-up concepts. The mass of an object is a measure of the amount of matter it contains. The weight is the force exerted by the gravity on the object.

Maric, Einstein, and Meitner had each one a pair of skates, each one weighted 16 N. This means the total weight of all three was 3*16=48 N.

The weight of an object of mass m is calculated by:

`W=m.g`

Where g is the acceleration of gravity, or g=9.8 m/s^2

Let's calculate the mass by solving the equation for m:

`\displaystyle m=(W)/(g)`

`\displaystyle m=(48)/(9.8)=4.90\ kg`

Einstein carried a total mass of 4.90 kg to the rental counter.