Mathematics · Height and Distance
A hot-air balloon directly above point A is rising vertically at 2 m/s. An observer at point B, 500 m due east of A, watches the balloon. At the moment when the angle of elevation is 30°, how long until it reaches an angle of elevation of 60°? (Assume no horizontal drift.)
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1285.565 s
- 2255.725 s
- 3250.862 s
- 4288.675 s✓
Correct answer
288.675 s
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