Three balls are launched from the top of a building of height H. The balls m1 and m2 are launched with the same initial speed Vo with m1 making an angle of 45o above the horizontal and m2 launched horizontally (i.e. 0 degrees to the horizontal); m3 is dropped straight vertically down from rest.
If m3>m2>m1 what will be the correct relationship between their final speeds when they hit the ground level (base level of the building)?
Assume air resistance is negligible
Correct answer (V1=V2)>V3... confused as to why