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savi
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Conservation of linear momentum is consequence of which one of Newton's three laws?
But it's not very interesting if a single body continues with uniform velocity, at least as far as conservation of momentum goes.savi said:I think it is Newton's first law , because its statement itself says that until we apply an external force, a body continues to be in its original state of rest or of unifrm motion in straight line.
Yes, it's the third law that leads to conservation of momentum. Consider a collision between two bodies. Since they exert equal and opposite forces on each other for the same time, they produce equal and opposite changes in momentum in each other--thus the total momentum of the system remains unchanged.But one of my colleagues thinks that it is the third law, because action reaction forces are equal and the total external force on the system being zero , momentum is conserved.
xboy said:I think it would be fair to say that it's a consequence of both first and third laws.
Newton's Law of Conservation of Linear Momentum states that the total momentum of a closed system remains constant over time, unless acted upon by an external force. In simpler terms, this means that in a system where there is no external force acting on it, the total amount of movement (momentum) will remain the same.
This law can be seen in everyday situations, such as when a car crashes into a stationary object. The car and the object will experience an equal and opposite force, resulting in a transfer of momentum. The total momentum of the system before and after the collision will remain the same, although it may be distributed differently between the car and the object.
No, the law of conservation of linear momentum is a fundamental law of physics and has been proven to hold true in all observed situations. It is a law that applies to all systems, from the microscopic to the macroscopic level.
Newton's second law of motion, which states that the net force acting on an object is equal to the product of its mass and acceleration, can be derived from the law of conservation of linear momentum. This is because, in a closed system, the change in momentum is equal to the net force acting on the system, divided by the time it takes for the force to act.
Yes, the law of conservation of linear momentum has many practical applications. For example, it is used in rocket propulsion systems, where the rocket's momentum is increased by expelling a high-speed exhaust in the opposite direction. It is also used in sports, such as in billiards or bowling, where the momentum of the ball is transferred to other objects in the system.