Question

56Yellow78GreenThe weight of an object onMars is its weight on Earth.Green12If a rock weighs 5 pounds onEarth, how much more does itweigh on Earth than on Mars?Blue1131415Red1718Orange

Answer 1

The rock weighs 3 pounds more on Earth than on Mar

Step-by-step explanation:

Given that the weight of an object in Mars is 2/5 its weight on earth.

`M=(2)/(5)E`

If a rock weighs 5 pounds on Earth;

`E=5\text{ lb}`

its weight on mars will be;

`\begin{gathered} M=(2)/(5)(5\text{ lb)} \\ M=2\text{ lb} \end{gathered}`

The difference between their ages is;

`\begin{gathered} =E-M \\ =5lb-2lb \\ =3\text{ lb} \end{gathered}`

Therefore, the rock weighs 3 pounds more on Earth than on Mars.