Question

NEED ASAP PLEASE !!

Answer 1

Answer: The correct answer is option (A).

Explanation:

Initial velocity of the balloon = 0 m/s

let the distance covered by the balloon from roof to the ground= h

Time taken by the balloon to reach the ground = t = 2.5 seconds

Acceleration due to  gravity = g =9.8 $m/s^2$

Using confuse equation of the motion:

$h=ut+\frac{1}{2}gt^2$

$h=0 m/s\times 2.5 s+\frac{1}{2}\times9.8 m/s^2\times (2.5 s)^2=30.625 m\approx 30.6 m$

Hence, the correct answer is option (A).

Answer 2

The balloon was 30.65 meters above ground.

ANSWER: A