Final answer:
No, Dwayne's estimate of his mass as 6 kilograms is not reasonable. An average adult human has a mass of about 70 kilograms, which is significantly higher than Dwayne's estimate.
Step-by-step explanation:
No, Dwayne's estimate of his mass as 6 kilograms is not reasonable. The estimated mass of 6 kilograms is significantly lower than the average mass of a human. On average, an adult human has a mass of about 70 kilograms. Dwayne's estimate is almost 12 times smaller than the average human mass.
It's important to note that mass is a measure of the amount of matter in an object, while weight is the force of gravity acting on that object. Mass remains the same regardless of location, but weight can vary depending on the strength of gravity. So even if Dwayne is in a location with weaker gravity, his mass estimate is still too low.
An estimate closer to the average human mass, around 70 kilograms, would be more reasonable.