Question #6416904Single Choice
Physics
Question
A jet is flying north at a speed of 400 km/h relative to the air. A tailwind is blowing at 90 km/h due east. What is the jet's speed relative to an observer on the ground?
Options
A
410 km/h
B
400 km/h
C
310 km/h
D
90 km/h
Answer & Analysis
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