- A200 km/h
- B360 km/h
- C720 km/h
- D1440 km/h
Step-by-Step Solution
Distance m in 15 s m/s km/h.
Answer: C) 720 km/h
An aeroplane flies horizontally at a height of 1500√3 m. From a point on the ground, its angle of elevation changes from 60° to 30° in 15 seconds. Find its speed.
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