Answer:
The 20.6 m/s will be the speed of ball after 3 seconds.
Explanation:
Initial velocity of the ball = u = 50 m/s
Final velocity of the ball = v = ?
Acceleration due to gravity = a = 
( ball is thrown against the gravity)
(first equation of motion)
Answer:
Below
Explanation:
An understanding of the structure of the Earth is important for many reasons
1. It can help us understand things that happen on the surface, like the magnetic field. The structure of the Earth explains that.
2. Things like tectonic plates severely affect the planet, such as the creation of many natural disasters. Understanding them helps us better prepare and anticipate them.
3. Understanding the structure of the Earth can help us identify the location of important natural resources (like different metals)
4. In the production of things like geothermal energy we need to understand the Earth's structure to know where we will get the most heat
Answer:
Most likely an hydrologist.
Explanation:
Hydrologists analyze data on environmental impacts of pollution, erosion, drought, etc.
Most of Australia is dry and sunny, there are many desserts and dry areas, unless of course you live in Tasmania like myself where is usually pretty wet. Although we do have some hot weather (hot being 25 degrees celcius) which isn't nearly as hot as is it is on the mainland where it can get up to close to 50 degrees celcius!!
