A fireman turns on his hose and is not backwards is this Newton's first law second Law or third law
The situation described is related to Newton's third law of motion. Newton's third law states that for every action, there is an equal and opposite reaction. When the fireman turns on the hose, the water is pushed out in one direction with a force. As a result of this action, there is a reaction force in the opposite direction that pushes the fireman backward.
The scenario you described does not directly relate to any of Newton's laws of motion.
Newton's first law, also known as the Law of Inertia, states that an object at rest will stay at rest, and an object in motion will stay in motion with the same speed and direction unless acted upon by an external force.
Newton's second law, also known as the Law of Acceleration, states that the acceleration of an object is directly proportional to the net force applied and inversely proportional to its mass.
Newton's third law, also known as the Law of Action-Reaction, states that for every action, there is an equal and opposite reaction.
In the case of a fireman turning on a hose and not being pushed backward, this can be attributed to a couple of factors other than Newton's laws. The force generated by the water flowing out of the hose might be effectively countered by the friction between the fireman's body and the ground, as well as the fireman's ability to brace themselves against this force.
To determine which of Newton's laws applies in this scenario, we need to understand what each law states:
1. Newton's First Law (Law of Inertia): An object at rest or in uniform motion will stay that way unless acted upon by an external force.
2. Newton's Second Law (Law of Acceleration): The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.
3. Newton's Third Law (Law of Action and Reaction): For every action, there is an equal and opposite reaction.
In the given scenario, the fireman turns on his hose, and it is not pushed backwards. Based on this description, we can conclude that Newton's Third Law applies here.
Explanation: Newton's Third Law states that for every action, there is an equal and opposite reaction. When the fireman turns on the hose, a powerful jet of water is expelled from the nozzle. As the water is expelled forward, the hose experiences an equal but opposite force pushing it backward. However, the fireman is holding the hose and can resist that backward force by applying the necessary counterforce, preventing it from moving backward.
Therefore, the reaction force exerted by the water jet on the hose is canceled out by the counterforce applied by the fireman, allowing him to keep the hose steady without being pushed backward.
In summary, the scenario of a fireman turning on his hose and not being pushed backward is an example of Newton's Third Law of motion in action.