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A certain airplane has a speed of 180 mi/h and is diving at an angle of 27 0 below the horizontal when a radar decoy is released. The horizontal distance between the release point and the point where the decoy strikes the ground is 2300 ft. (a) How long was the decoy in the air? (b) How high was the plane when the decoy was released? See Fig.

A certain airplane has a speed of 180 mi/h and is diving at an angle of 270 below the horizontal when a radar decoy is released. The horizontal distance between the release point and the point where the decoy strikes the ground is 2300 ft. (a) How long was the decoy in the air? (b) How high was the plane when the decoy was released? See Fig.

Grade:11

1 Answers

Kevin Nash
askIITians Faculty 332 Points
8 years ago
234-449_1.PNG
Therefore, it takes 9.77 s for decoy to reach the target.
234-234_1.PNG
The negative sign accounts for the fact that the decoy moves closer to ground.
Therefore, the vertical displacement of decoy is 2698 ft.

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