What is the maximum height of the ball? (2 points) 2. What interval is the ball increasing in height? (2 points)
3. When does the ball hit the ground? (2 points)

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m

so what is the problem what are they asking you to solve

step-by-step explanation:

so what is the problem what are they asking you to solve