MCQOPTIONS
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| 1. |
The angle of elevation of an aeroplane from a point on the ground is 60 . After 15 seconds flight, the elevation changes to 30 . If the aeroplane is flying at a height of 1500 3 m, find the speed of the plane |
| A. | 300 m/sec |
| B. | 200 m/sec |
| C. | 100 m/sec |
| D. | 150 m/sec |
| Answer» C. 100 m/sec | |