# Physucs 112 Chapter 3 Review

## Terms

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- Scalar
- A quantity specified by its magnitude, (a number and a unit.)
- Components
- The effective values of a force in directions other than the force itself.
- Vector
- A quantity specified by a magnitude and a direction, (a number, a unit, and a direction.)
- Resultant
- is a single force which will produce the same effect in both magnitude and direction as two or more concurrent forces.
- Displacement
- A vector or the magnitude of a vector from the initial position to a subsequent position assumed by a body.
- Sine
- ratio of the opposite side to the hypotenuse of a right-angled triangle.
- Force
- A vector quantity that tends to produce an acceleration of a body in the direction of its application.
- Cosine
- ratio of the adjacent side to the hypotenuse of a right-angled triangle.
- Concurrent forces
- two or more forces acting at the same point of an object.
- Tangent
- the ratio of the opposite side to the adjacent side of a right-angled triangle.