Responses

pulling one end of a spring and releasing it
pulling one end of a spring and releasing it

attaching one end of rope to a chair and moving the other end up and down
attaching one end of rope to a chair and moving the other end up and down

holding a ball up high and releasing it
holding a ball up high and releasing it

attaching one end of rope to a chair and moving the other end from side to side
1 answer
The best option to model the motion of P waves (primary waves) is:
pulling one end of a spring and releasing it.
P waves are longitudinal waves, meaning that the particles of the medium move back and forth in the direction of the wave's travel, similar to the compression and extension of a spring. In contrast, the other options involve vertical or transverse movement, which do not represent the longitudinal nature of P waves.
