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Kinetics and Newtons Laws
Kinetics
Are how it look the forces involved in the movement of an object.
Linear Kinetics
Force
Force is the interaction between two objects or bodies. We can see friction or gravity.
Friction is the resistance when an object encounters when moving over another.
Gravity is the force applied over the objects or bodies to the center of the earth.
Mass and weight
Mass is the quantity of of material in a object or body.
Weight is the effect of the force of the mass thanks to gravity.
Newtons Law of motion
“An object will remain at rest or
continue with constant velocity unless acted on by an unbalanced force.”
This law is known as the law of inertia.
If a body or object wants to stay rest in the earth, a force must be balancing its weight, acting in the opposite way.
“The acceleration (for a body/ object of constant mass) is proportional to, and in the same direction as, the unbalanced force applied to it.”
“Force is equal to mass multiplied by acceleration”
(F 5 ma).
“When one body or object applies a force to another, the second body or object will apply a force equal in size but opposite in direction to the first body or object.”
“for every action there is an equal and opposite reaction.”
Linear momentum
Property that an object have due to the movement.
Linear impulse is force multiplied by the time it acts for (J = Ft) and is also a vector.
Conservation of linear momentum
When two bodies or objects crash, the total linear momentum stays the same.
A little amount of energy is lost thanks to the sound and heat.
