Question

A balloon is rising at 29.4 m/s. A stone fall from the balloon and reaches the ground in 20.0 s. How high is the balloon in meters when the stone is dropped?

Answer 1

Answer:

The height is 2588 m

Explanation:

initial velocity of

the balloon, u= 29.4 m/s

time, t = 20s

Using 2nd eqn of motion,

h= ut + gt²/2 (let g= 10m/s²)

h= 29.4 × 20 + 10×(20)²/2

h= 588 + 4000/2

h= 1176 + 4000/2

h= 5176/2

h= 2588 m