Final answer:
The weight of a newborn baby with a mass of 3.5 kilograms on Earth is calculated using the formula w = mg, which yields a weight of 34.3 N.
Step-by-step explanation:
To find the weight of a newborn baby with a mass of 3.5 kilograms, we use the formula for weight, which is the product of mass (m) and the acceleration due to gravity (g). The formula is: w = mg.
Given the acceleration due to gravity on Earth is 9.8 m/s², and using the baby's mass:
w = (3.5 kg)(9.8 m/s²) = 34.3 N
Therefore, the correct answer is A) 34.3 N, which represents the weight of the baby on Earth, considering the standard value for acceleration due to gravity.