Airplanes A and B are flying with constant velocity in the same vertical plane at angles 30 ^ o and 60 ^ o with respect to the horizontal respectively as shown in the figure. The speed of A is 100 3 m s ^ - 1 . At time

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Correct answer: 5

The relative velocity of B with respect to A is perpendicular to line of motion of A.

Airplanes A and B are flying with constant velocity in the same vertical plane at angles 30 ^ o and 60 ^ o with respect
$∴ {V}_{B}cos {30}^{o} = {V}_{A}$
$⇒ {V}_{B} = 200$ m/s
And time ${t}_{0} = \dfrac{\left(\text{ Relativedistance }\right)}$ { $\left(Relativevelocity\right)}$
$= \dfrac{500}{{V}_{B}sin {30}^{o}} = 5sec$

Airplanes A and B are flying with constant velocity in the same...

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