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Newton Third Law of Motion

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manal 888

on 12 March 2013

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Transcript of Newton Third Law of Motion

The book lying on the table is exerting a downward force on the table. The table is exerting an upward force on the book.
For every action,
there is an equal
and opposite
reaction. Force is a pull or a push that occurs when it interacts with another object. Introduction 2) A 10.0 kg object undergoes an acceleration of 5.0 m/s^2. What is the magnitude of the net force acting on the object? If this same force is applied to a 2.0kg object, what acceleration is produced? Math Problems Example The swimmer is applying a force to the wall when she kicks off the wall. And the force that applies to the swimmer comes from the wall. As, the wall is exerting force on the swimmer, the swimmer is exerting force on the wall. Understanding
N3L THIRD LAW Newtons Third Law: To reiterate: when two objects interact with each other they exert forces against each other.
N3L describes the relationship between two forces in an interaction.
One force is called the action force.
• The other force is called the reaction force.
• Neither force exists without the other.
• They are equal in strength and opposite in direction.
• They occur at the same time simultaneously.
To identify a pair of action-reaction forces, first identify the interacting objects A and B, and if the action is A on B, the reaction is B on A. The table legs are in contact with the floor and exert a force downward on it, The floor exerts an equal and opposite force upward. Newton's Law of Motion:
Third Law Action-Reaction A pushes on B
B moves backwards. The fuel tanks of the rocket is what helps the rocket push off. The fuel tanks help produce chemical reaction, proper combustion. It helps produce gases, ultra high velocities which shoot from the back. These gases is what helps the rocket to take off. As the gases exert its force downwards, the rocket moves upward. :) Gases M= 10.0 kg
A= 5.0 m/s^2 F=10.0kg*5.0m/s^2 F=50N F=50N
M=2.0kg
F=M*A
50N=2.0kg*A
A=F/M
A=50N/2.0kg
A=25m/s^2 Person A Person B TRY THIS AT HOME DIY 1) We know that Earth pulls on the moon. Does the moon also pull on Earth? If so, which pull is stronger? Answers Asking which pull is stronger is like asking which
distance is greater—between New York and San Francisco,
or between San Francisco and New York. The distances
either way are the same. It is the same with force pairs. Both
Earth and moon pull on each other with equal and opposite
forces.
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