The space shuttle travels at 28000 mph while orbiting the earth. How far does the shuttle travel in feet per day

We are given the speed of the shuttle as:

speed = 28,000 miles / hour

We know that:

1 mile = 5280 ft

24 hour = 1 day

Therefore by conversion:

speed = (28,000 miles / hr) * (5280 ft / 1 mile) * (24 hr / day)

speed = 3,548,160,000 ft / day

In 2 significant figures:

speed = 3.5 x 10^9 ft / day