An octopus propels itself through the water by injecting water through a funnel in its by. How does this demonstrate newtons third law?
Newton's third law states that for every action, there is an equal and opposite reaction. In the case of an octopus, when it injects water through the funnel, it creates an action force. The water, in turn, produces an equal and opposite reaction force, which propels the octopus forward. This demonstrates Newton's third law because the force applied by the octopus (action) is met with an equal and opposite force (reaction) that propels the octopus through the water.
When an octopus propels itself by injecting water through a funnel in its body, it demonstrates Newton's third law of motion. Newton's third law states that for every action, there is an equal and opposite reaction.
In this case, the action is the octopus forcefully ejecting water out of its funnel. As the water is expelled backward, an equal and opposite reaction occurs. According to Newton's third law, this reaction force pushes the octopus forward in the opposite direction with an equal amount of force.
So, by expelling water backward, the octopus generates a reactive force that propels it forward through the water, in accordance with Newton's third law of motion.