Contact and Non - Contact Forces

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10 Terms

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Vector

A quantity that has both magnitude and direction

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Examples of vector quantities?

Force, velocity, displacement, acceleration, momentum

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Scalar

A physical quantity that has magnitude only, NO DIRECTION

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Examples of scalar quantities

Speed, distance, mass, temperature, time

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How are vectors represented?

With arrows - the length shows the magnitude and the direction of the arrow shows the direction of the vector.

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Contact force

A push or pull on one object by another that is touching it

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Examples of contact forces

Friction, air resistance, tension in ropes, normal contact forces

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Non - contact force

A force that one object can apply to another object without touching it

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Examples of non - contact forces

Magnetic, gravitational, electrostatic

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Interaction pair

A pair of forces that are equal in strength, but opposite in direction