Question

an aeroplane takes off at an angle 30 degree to the horizontal its component of velocity is 200 along horizontal what is its actual velocity

Answer 1

actual velocity= v
component along horizontal=
$v \cos( \alpha )$
angle alpha=30°
$200 = \frac{ \sqrt{3} v}{2} \\ v = \frac{400}{ \sqrt{3} } m {s}^{ - 1}$