Law of Conservation of Momentum

In summary, the Law of Conservation of Momentum applies to the act of pitching a baseball by relating the momentums of the ball, the pitcher, and the Earth after the pitch is thrown. This is assuming that at the beginning, all relative velocities are zero and there are no external forces or torques acting on the system.
  • #1
crivea24
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Homework Statement



Apply the Law of Conservation of Momentum to the act of pitching a baseball.


Homework Equations


f=ma


The Attempt at a Solution


?
 
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  • #2
Hello crivea24,

Welcome to Physics Forums!
crivea24 said:
Apply the Law of Conservation of Momentum to the act of pitching a baseball.
[...]
Here's a hint. Assume that at the beginning, before the pitch is thrown, the relative velocities of the ball, the pitcher and the Earth, are all zero. So how does Conservation of Momentum relate the momentums of the ball, the pitcher and the Earth after the pitch is thrown?

(I'm not sure if you are supposed to ignore angular momentum or not, for this problem. But no matter which way you model the system, momentum ends up being conserved, one way or the other. [as long as you model enough of the entire system such that there are no external forces or torques])
 

FAQ: Law of Conservation of Momentum

What is the Law of Conservation of Momentum?

The Law of Conservation of Momentum states that in a closed system, the total momentum of the system remains constant. This means that the total amount of momentum before a collision or interaction is equal to the total amount of momentum after the collision or interaction.

What is momentum?

Momentum is a measure of an object's motion and is equal to the product of its mass and velocity. In other words, the more massive an object is and the faster it is moving, the greater its momentum will be.

What is a closed system?

A closed system is a system in which there is no external force acting on the objects within the system. This means that the total momentum of the system will not change unless there is an external force acting on it.

How is momentum conserved?

Momentum is conserved because of the fundamental laws of physics, specifically the laws of motion and the law of conservation of energy. When two objects interact, they exert equal and opposite forces on each other, resulting in the conservation of momentum.

What are some real-life examples of the Law of Conservation of Momentum?

Some examples of the Law of Conservation of Momentum in real life include a ball bouncing off a wall, a car colliding with another car, or a rocket launching into space. In all of these scenarios, the total momentum of the system remains constant, even though there may be changes in the individual objects' velocities.

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