Final answer:
The weight of an astronaut with a mass of 90 kg on the moon is 145.8 N.
Step-by-step explanation:
To calculate the weight of an astronaut on the moon, we can use the formula:
Weight = mass x acceleration due to gravity
Given that the mass of the astronaut is 90 kg and the acceleration due to gravity on the moon is 1.62 N/kg, we can substitute these values into the formula:
Weight = 90 kg x 1.62 N/kg = 145.8 N
Therefore, the weight of the astronaut on the moon would be 145.8 N.