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Motion in One Dimension

Coordinate systems

- locate the zero point and the direction of

increasing value - two dimensions - horizontal and vertical motion

(jumping) - position vector - length is proportional to the

distance from the origin and points to the

direction of movement - negative and positive positions

Time Intervals and Displacement

- displacement - distance and direction between two

positions - time interval - ?t t1 - t0
- displacement - change in distance
- ?d d1 - d0

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Speed and Velocity

- Speed is how fast (Scalar)
- Velocity is how fast and in what direction

(Vector)

Basic Equation

- When an object travels with a constant speed of v

over a time of t, the distance, d, for the object

can be calculated using the following equation

Sample Problem

- So, for example, if an object moved with a

constant velocity of 5 m/s for 3 s, then it would

be displaced 15 m. Here is an example of that

calculation

Various Forms of Equations

- The above equation could be rearranged using

algebra into other forms. Here are all of its

forms