An octopus propel itself through the water by ejecting water water through a funeral and its body. How does this demonstrate Newton third law?
This statement does not accurately describe how an octopus propels itself through the water. Octopuses actually use a specialized muscular structure called a siphon to forcefully expel water in one direction, which propels them in the opposite direction due to Newton's third law of motion.
Newton's third law states that for every action, there is an equal and opposite reaction. In the case of the octopus, it contracts its muscles to eject water out of its siphon, exerting a force in one direction. As a result of Newton's third law, an equal and opposite force is produced, pushing the octopus in the opposite direction. This reaction force propels the octopus forward through the water.
Therefore, the octopus expelling water through its siphon to move forwards demonstrates Newton's third law because the action of ejecting water generates an equal and opposite reaction force that propels the octopus in the opposite direction.