Final answer:
The astronaut's speed during the spacewalk towards the west is 4.167 meters per second, calculated by dividing the distance of 120,000 meters by the time taken, 28,800 seconds.
Step-by-step explanation:
The question involves calculating the speed of an astronaut during a spacewalk.
To find the speed, you need to divide the distance traveled by the time it takes to travel that distance.
Given that the astronaut covers a distance of 120 km (which is 120,000 meters) in 28,800 seconds, the speed of the astronaut can be calculated as follows:
Speed = Distance / Time
Speed = 120,000 m / 28,800 s
Speed = 4.167 m/s
Therefore, the speed of the astronaut's spacewalk towards the west is 4.167 meters per second (m/s).