Two air planes are flying horizontally in the same direction with constant speed The first is at an altitude - Physics - Motion In A Plane

Question

Two air planes are flying horizontally in the same direction with
constant speed The first is at an altitude of 1000m and has speed
of 80 m/s The second is at an altitude of 500m and has speed of 60
m/s A passenger is in the first airplane drops a bag so as to hit
the second airplane What must be the initial horizontal seperation
(in m) between the first airplane amd second airplane when the bag
is dropped?
A)400 m
B)300 m
C)200 m
D)150 m

Anshu Agrawal · Accepted Answer

Dear student,

Relative spped between the two airplanes will be vr =80-60 =20m/s(same direction)Vertical distance or height that needs to be coveredh=1000-500=500mHorizontal distance =vr2hgHorizontal distance =202×50010Horizontal distance =20×10 =200m

Option c is correct

Regards