find the weight of a person with a mass of 68.0kg

Wt. = M*g Newtons.

To find the weight of a person with a given mass, you can use the equation W = m * g, where:

W = weight
m = mass
g = acceleration due to gravity, which is approximately 9.8 m/s² on Earth.

Now, let's calculate the weight using the given mass:

m = 68.0 kg
g = 9.8 m/s²

W = m * g
W = 68.0 kg * 9.8 m/s²
W = 666.4 N

Therefore, the weight of a person with a mass of 68.0 kg is approximately 666.4 Newtons.