What Do You Need to Know to Determine Velocity?
- Displacement is different from distance, as distance is the total amount of of travel. Displacement on the other hand, is how far away a point is from the original location. For example, walking 10 feet forward, then 5 feet backward is a distance of 15 feet, but a displacement of only 5 feet. Displacement is represented as the S in the velocity equation.
- Though displacement is different from distance, it is measured in the same units. Displacement is a relatively simple property, and can be found by subtracting a point or object's original position from that object's final position. Additionally, displacement can be graphed by rearranging the velocity equation to read S = V times T, and inputting the velocity and time values as the x and y graph values.
- The T in the velocity equation stands for acceleration, another principle that can appear complex, but is simply the change of velocity per time. Acceleration can be written as the change in velocity over the change in time, and is typically measured in meters per second to the power of negative two.
- By graphing displacement as S=V times T, the acceleration can also be found. Since acceleration can be written as the change in velocity over the change in time, the value of the slope of the line in a graph of displacement is equal to the acceleration. Additionally, finding the area of the space under line of a displacement graph is equal to the total distance traveled by the body in question.
Displacement
Graphing Displacment
Acceleration
Graphing Acceleration
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