You can study article about slope and speed
Answer:
Action Force was the ball falling on the ground, the reaction force was it bouncing back up.
You see the first arrow pointing back, because the swimmer is pushing back against the wall. The second arrow would be pointing the other way, because the swimmer will extend their legs, pushing away from the wall.
Explanation:
The decay and compression of organic material millions of years ago resulted in extremely fertile soil that helped large rain forests to grow. This describes the way energy and matter are recycled within an ecosystem. This organic material goes into the ground, feeds it, and in turn makes it fertile so that various types of trees and plants can grow from it.
The charge on an electron is ~
" - " symbol is used to show that its negative.