# Force

Mind Map by fitzg.p.319, updated more than 1 year ago
 Created by fitzg.p.319 over 6 years ago
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### Description

This Mind Map shows all the different key terms we learned in Chapter 2

## Resource summary

Force

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• A push or pull
1. Newton

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• The strength of force is measured in the SI unit called newtons.
1. Net Force

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• The combination of all forces acting on an object
1. Balanced Forces

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• Equal forces acting on one object in opposite directions.
1. Unbalanced Forces

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• Can cause an object to start moving, stop moving, or change direction.
1. Free Fall

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• When the only force acting on an object is gravity.
2. Friction

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• The force that two surfaces exert on each other when they rub against each other.
1. Static Friction

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• The friction that acts on objects that are not moving.
1. Sliding Friction

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• Occurs when two solid surfaces slid over each other.
1. Rolling Friction

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• When an object rolls across a surface.
1. Fluid Friction

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• When a solid object moves through a fluid.
1. Air Resistance

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• Objects falling through air experience a type of fluid friction.
1. Terminal Velocity

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• The greatest velocity of a falling object reaches.
2. Gravity

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• Is a force that pulls objects toward each other.
1. Mass

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• Is a measure of the amount of matter in an object. The more mass an object has, the greater its gravitational force.
1. Weight

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• The force of gravity on a person or object at the surface of a planet. Weight is a measure of the gravitational force exerted on an object.
2. Universal Gravity

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• States that the force of gravity acts between all objects in the universe. This means that any two objects in the universe, without exception, attract each other.
1. Factors Affecting Gravity

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• Two factors affect the gravitational attraction between objects: mass and distance. The gravitational force depends on the distance between the objects.
2. Projectile

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• An object that is thrown.
1. Inertia

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• Is the tendency of an object to resist a change in motion.
1. Momentum

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• Is a characteristic of a moving object that is related to the mass and the velocity of the object.
1. Law Of Conversation Of Momentum

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• States that in the absence of outside forces, the total momentum of objects that interact does not change.

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