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`        A top gun pilot , practising radar avoidance , is manually flying horizontally at 1300kmph 35 m above level ground. suddenly the plane encounters teraain that slopes gently upward at 4.3 degree - difficult to detect visually. How much times does the pilot have to make a correction to avoid flying into ground ?`
7 years ago

22 Points
```										Hi Mohit,
tan(4.3 degrees) = 0.0751903777
tan(4.3 deg) = P/B = 35/B
thus B = 35/(0.0751903777) = 465.48 m
time = Horizontal distance which plane has before it hits the terrain / Speed of plane
= B / (1300 )
B = 465.48 m = 0.46548 Km
thus time = 0.46548 / 1300
= 0.000358 hr
= 0.000358 * 3600 sec
= 1.288 seconds
thus the plane has 1.288 seconds to make a correction to avoid flying into ground
Puneet
```
7 years ago
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