A food package was dropped from an aircraft flying horizontally. 6 s before it hit the ground, it was at a height of `780 m`, and had travelled a distance of 1 km horizontally. Find the speed and the altitude of the aircraft.

Answer

`360 km//hr, 1.28 km`

Explanation

`780=u sin theta xx6+1/2xxgxx36`
`780-180=u sin theta xx6`
using `theta=600/6=100 m//sec`
i.e. food package dropped before 10 secs
`1000=uxx10 rArr u=100 m//s`
`:. H=(gxx(16)^(2))/2=1280 m`.