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    I am stuck on a physics question.

    Air-traffic control detects an aircraft on a bearing 090 degrees (due east). Radar pulses return with a delay of 0.2ms. 100s later it is detected on a bearing of 120 degrees, with a pulse delay of 0.173ms. Show that the velocity of the aircraft is 50m/s on a bearing of 210 degrees.

    I don't understand how these answers have came about and I would appeciate if someone could explain to me how these answers have came about.
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    From the pulse return times you can work out the distance of the plane from the radar station.

    When you've got the 2 positions for the plane you can work out the distance and direction between them and from that the planes heading and speed.
 
 
 
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