How fast must a plane fly along the earth\'s equator so that the sun stands stil

Question

How fast must a plane fly along the earth's equator so that the sun stands still relative to the passengers? Give your answer in both

km/h and mph.The radius of the earth is 6400 km.

part A

km/h

Express your answer using two significant figures.

part B

mph

Part C

In which direction must the plane fly, east to west or west to east?

How fast must a plane fly along the earth's equator so that the sun stands still relative to the passengers? Give your answer in both km/h and mph.The radius of the earth is 6400km. Express your answer using two significant figures. In which direction must the plane fly, east to west or west to east?

Explanation / Answer

a) Angular Velocity of Earth is w = 7.3 * 10^-5 rad/s

For Sun to to remain still , plane must fly from east to west at the velocity.

v = wR

v = 467.2 m/s

PartA) v = 1681.92 Km/hr = 1700 Km/hr [2 significant figures]

Part B) v = 1045.13 mi/hr = 1100 mi/hr

Part C) For Sun to to remain still , plane must fly from east to west as earth rotates from

west to east.

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