Answer:
971 km/h
Step-by-step explanation:
The length of a planet's orbit around a star is approximately 16,540,000 km and it takes the planet about 710 Earth days to complete a full orbit.
Average speed is given as total distance traveled divided by time taken. That is:
S = D / t
Where t is in hours.
We have to convert 710 days to hours:
1 day = 24 hrs
710 days = 710 * 24 = 17040 hours
Therefore, the planet's speed is:
S = 16540000 / 17040 = 971 km/h (to 3 sf)
