Final answer:
The average weight of the kittens is calculated by summing their individual weights and dividing by the number of kittens, which is 8. To calculate kinetic energy of the sheep and lamb, we use their given masses and velocities in the kinetic energy formula.
Step-by-step explanation:
To find the average weight of Mr. Barnaby's kittens at 3 weeks old, we need the total weight of all kittens and the number of kittens. Although the specific weights of the kittens are not provided in the question, the process involves adding all the individual weights together and then dividing by the total number of kittens, which is 8 in this case. To find the average weight of the kittens, we need to add up all the weights and then divide by the number of kittens.
According to the line plot, there are 8 kittens. Let's add up the weights: 0.5 + 0.6 + 0.4 + 0.8 + 0.7 + 0.6 + 0.9 + 1.2 = 5.7 kilograms. Now, we divide by 8 to find the average: 5.7 / 8 = 0.7125 kilograms. So, the average weight among all the kittens is 0.7125 kilograms.