Answer:
35 m/s
Step-by-step explanation:
Let gravitational acceleration g = 9.8m/s2. We can calculate the amount of time for the ball to fall vertically a distance of 1.6 m



This is also the time it takes for the ball to fly horizontally, assume constant horizontal speed, we can calculate the speed it takes to travel across 20m in 0.571s
v = 20 / 0.571 = 35 m/s
Multiply the second fraction by three.
4/9 + 3/9 = 7/9
An hour and 15 minutes i believe. not 100% though
The answer is false. I hope this helps love! :)
If you are referencing a picture, there is none attached to this post. If you can repost with a picture I can try to help you!