A reconnaissance plane flies 685 km away from its base at 570 m/s...?
A reconnaissance plane flies 685 km away from
its base at 570 m/s, then flies back to its base
at 855 m/s.
What is its average speed?
Answer in units of m/s
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Verified answer
avg speed = total distance / total time
total distance = 2x685 km = 1370km=1.37x10^6m
time of first segment = 685,000m/570m/s = 1202s
time of second segment = 685,000m/855s = 801s
total time = 2003s
avg speed = 1.37x10^6m/2003s = 684m/s