A woman has a mass of 64.2 kg. What is her weight on earth?

Have you tried using W = M g?

If you use that formula, her mass will be in Newtons.

Don't you have a textbook?

To find the weight of a person on Earth, we can use the formula:

Weight = mass * acceleration due to gravity

The acceleration due to gravity on Earth is approximately 9.8 m/s^2.

Therefore, the woman's weight on Earth can be calculated as:

Weight = 64.2 kg * 9.8 m/s^2

Weight = 628.56 N

So, the woman's weight on Earth is approximately 628.56 Newtons.