Answer:
Repeaters.
Step-by-step explanation:
This is essential to effective communication because your EMS system must use Repeaters.
These are machines used to carry signals across a great distance. We may be in ambulances or put around an EMS network in different areas. The repeater receives and re transmits signals from lower power systems, such as mobile and handheld phones, to a higher power.
Answer:
answer in image below
Step-by-step explanation:
hope this helps
give me brainly please
The easiest way to find that answer is to look at the solution that I just gave you for the same ball traveling at 30 M/Sec, and just substitute 20 in place of 30 in that solution.