"A space shuttle travels around the Earth at a constant speed of 28000 kilometers per hour. If it takes 90 minutes to complete one orbit, how far is its journey around Earth? "

42000km

Explanation:

Average Speed (v) can be calculated using the formula as follows:

Average speed = distance (d) ÷ time (t)

According to this question, a space shuttle travels around the Earth at a constant speed of 28000 km/hr in 90 minutes.

Since 60 minutes = 1 hr

90 minutes = 90/60

= 3/2 or 1.5hours.

Using speed = distance/time

Distance (km) = speed × time

Distance = 28000 km/hr × 1.5hr

Distance = 42000km

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