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Answer:
I can help with the last question.
Step-by-step explanation:
The force from the ball on the left ball will hit the ball next to it, bringing the force all the way to the right ball, and vice versa. Have a great day!
gravity is pulls objects to the center of the earth.
friction is slows or stops motion when objects rub together.
magnetism is pushes or pulls objects containing iron or other metals.