Question

Aller: A balloon is ascending at the rate of 10m/s
when it is at the height of 1000 m, it dropped
the food packet. when & with what velocity
will it come to Earth?​

Answer 1

Applying law of conservation of energy

mgh=0.5mv²

2gh = v²

2x1000x10= v²

v ~ 140 ms-¹

t² = 2h/g

t = 2x1000 /10

t = 14 s