Question

For his school's science fair, Brad made a bottle rocket powered by the pressure of the carbonated soda in the bottle. He launches the rocket, and it runs out of soda at a height of 9 meters. At that moment, the rocket is moving upward with a velocity of 7 meters per second. It continues to travel upward before falling to the ground.

To the nearest tenth of a second, how long does it take the rocket to hit the ground after running out of soda?
Hint: Use the formula h=
–
4.9t2+vt+s.

Answer 1

1 second and 20 milliseconds

Explanation:

9-7= 1 and 2/10

Hoped this helped! =) have a good day :D