Answer the following statement(s) true (T) or false (F)

Which of the following pairs of forces are third-law partners? Answer T if the two forces described are third-law partners, F if they are not.
1. A thrust force from its propeller pulls a plane forward; a drag force pushes it backward.
2. A car exerts a forward force on a trailer; the trailer tugs backward on the car.
3. A motorboat propeller pushes backward on the water; the water pushes forward on the propeller.
4. Gravity pulls down on a person sitting in a chair; the chair pushes back up on the person.


1. FALSE
2. TRUE
3. TRUE
4. FALSE

Physics & Space Science

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