Answer:
0.195 seconds
Step-by-step explanation:
We throw the ball from 5 feet off the ground and we want to know how long it will take for the ball to be 20 feet off the ground. We can subtract to find the height we need off the ground.
20 - 5 = 15ft
We are give the rate 77ft/s so it won't take a full second for the ball to be 20ft in the air. We can divide to find the time it takes.
15 / 77 ≈ 0.195s
Best of Luck!
