Question

a balloon is rising vertically up with a velocity of 29m/s

Answer 1

A stone is dropped from it and it reaches the ground in 10secs .

Answer 2

Answer:200m

Explanation:

Here,

u is 29m/s

Height should be taken negative as ball is dropping.

g is always negative bcoz any body in motion moves against acceleration due to gravity...

Using second kinematical eqn

S=ut+1/2at2

-H= 29×10 -1/2 ×9.8×100

-H=290-490

-H=-200

H=200m