Newton's+Third+Law

__ Newton's Third Law __

Table of Contents 1. Newton's Third Law of Motion 2. Momentum 3. Conservation of Momentum 4. Resources

Newton's Third Law of Motion An example of an action force would be pushing your feet off the ground. The reaction force is when you jump up in the air; the ground is pushing you off the ground (Jones).

An example for detecting motion is when you drop a pencil the gravity pulls the pencil downward. While that is happening the pencil pulls earth upward with an equal and opposite reaction force, even though you don’t see the earth accelerate toward the pencil (Jones).

An example for action and reaction is a volleyball player exerts an upward action force on the volleyball. In arrival the ball pushes an equal but opposite downward reaction on the girl’s wrists. In addition it is exerting a force on the same object (Jones).

Momentum Momentum is a feature of a traveling object that is associated to the mass in addition to the speed of the object. Then since mass is measured within kilograms as well as speed is measured within meters for each second, the element of force is kilogram - meters for each second (Jones).

The law of conservation of momentum states that within the absence of outer forces, the full amount of momentum of objects to act together does not change. The total amount of momentum is similar prior to before and after they relate to each other (Jones).

Conservation of Momentum

An example of collisions with two moving objects is that one train goes at 2m/s and the other train goes at 4m/s. Also they both have equal masses. As the blue car speeds up with the green car and collides into it, the collision, the speed of each car can vary. The blue car diverges down two meters m/s, and in edition the green car accelerates up to 4m/s. Also momentum is preserved – the momentum of an individual train car slows down, where as the momentum of the other car speeds up.

An example of collisions with one moving object is when the blue car travels, at a speed of 4 m/s, but the green car is not accelerating. Finally, the blue car collides into the green car. After the collision, the blue car is not moving anymore but the green car travels at a speed of 4 m/s. Although the condition has changed, momentum is preserved. Every momentum has been relocated from the blue car transferred to the green car. An example of collisions with connected objects is if the two cars come together when they collide.  media type="custom" key="6215209" media type="custom" key="6215225"  Resources Jones, T. //Motion, Forces, and Energy//. Upper Saddle River: Pearson, 2009. Print.