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Questions and Answers
What is a force?
A push or pull in a particular direction.
In which unit are forces measured?
Newtons (N).
Forces usually act in pairs.
True
What type of forces act when two objects are in physical contact?
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Friction is the force that opposes motion between two ______.
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What does the amount of friction depend on?
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What force is transmitted through a string, rope, cable, or wire when it is pulled tight?
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What is normal force?
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What is air resistance?
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What is applied force?
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What is spring force?
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Which of the following are considered distance forces?
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Study Notes
Forces
- A push or pull in a particular direction
- Measured in Newtons (N)
- Forces act in pairs
- Forces usually cannot be seen, but their effects can
- Forces have magnitude and direction
Types of Forces
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Contact Forces - occur when two objects are in physical contact.
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Friction - Opposes motion between two surfaces in contact.
- Amount of friction depends on the types of surfaces and how hard they are pressing against each other.
- Example: Sliding down a slide
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Tension- Transmitted through a string, rope, cable, or wire when pulled tight from both ends.
- Example: Tire swing hanging from a tree.
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Normal - Support force exerted on an object in contact with a stable object.
- Example: Book sitting on a table, a person leaning against a wall.
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Applied - Force applied by a person or another object.
- Example: Pushing a lawnmower.
- Spring - Force exerted by a compressed or stretched spring on an attached object.
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Friction - Opposes motion between two surfaces in contact.
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Distance Forces - Occur when two objects are NOT in physical contact, yet exert a push or pull.
- Gravitational
- Electrical
- Magnetic
Examples of Forces
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Air Resistance - Frictional force that acts on objects traveling through the air.
- Usually measurable at high speeds.
- Example: Air slowing a parachute as it falls from a plane.
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Description
Test your knowledge on the various types of forces and their characteristics. This quiz covers contact forces like friction, tension, and normal force, as well as applied and spring forces. Understand how these forces interact and their effects on motion.
