# Forces

Name the forces
Weight, Friction, Air Resistance (or drag), Viscous Drag, Upthrust, Magnetic, Electrostatic, Normal Reaction, Tension.
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What is the Unit of Force?
Forces are measured in Newtons (N) 1N is roughly the weight of an apple due to the Earth's gravity.
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Weight
The force that acts on a body because of gravity
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Friction
The force that opposes motion, either when you try to make something move or while it's moving
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Air Resistance (drag)
Friction between an object and the air (or gas) that it is moving through
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Viscous drag
Similar to air resistance, but occurs when an object is moving through a liquid
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Upthrust
the upward force that liquids and gases exert on objects
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Magnetic
Forces that magnets exert on other magnets or things made of iron (or other ferrous materials)
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Electrostatic
The force between electrically charged objects
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Normal Reaction
The special name for the contact force that acts on an object pressing down on another object.
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Tension
In strings, cables, ropes, etc. that are being stretched (not slack)
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## Other cards in this set

### Card 2

#### Front

What is the Unit of Force?

#### Back

Forces are measured in Newtons (N) 1N is roughly the weight of an apple due to the Earth's gravity.

Weight

Friction

### Card 5

#### Front

Air Resistance (drag)