From a point on the ground, the angle of elevation of a jet plane is 60°. After a flight of 15 seconds, it becomes 30°. If plane flies at 1500√3 m, find speed.

Question

Accepted Answer

A. 200 m/s

Answer

B. 100 m/s

Answer

C. 150 m/s

Answer

D. 300 m/s

From a point on the ground, the angle of elevation of a jet plane is 60°. After a flight of 15 seconds, it becomes 30°. If plane flies at 1500√3 m, find speed.

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