displacement of an object over a period of time. The distance traveled in a particular direction over some time. If you walk in a straight line you have no dispacement up or down, so in the y-direction you have no velocity but in the x direction you have some velocity.
Unit:
m/s traveled in a single direction
Example:
Velocity is direction based. So, in the case of this picture, the distance traveled is 0 so the average velocity of the gilr is zero when she meets the point where she started. This is so because she returns to her original position. Because the average velocity is direction based and she went just as far up as she went down and just ar far right as she did left all of her movement is negligable since she ultimatly traveled nowhere.
*note: velocity can be negative. If the positive direction is to the right and you go to the left you are traveling in a negative direction, thus making your velocity negative
Equations:
bar{mathbf{v}} = frac{Delta mathbf{x}}{Delta t}.
v=average velocity x=change in distance t= change in time
Unlike instantaneous velocity, average velocity is.....
Instantaneouse velocity: is the velcocity that you are traveling at that moment.
Average speed:This is the velocity that you have traveled over a period of time on average. So if you go in a negative direction for a longer time than you go in a positive direction then your average velocity is the distance traveled in the negative direction from your start point over the time of all your travel.
Average Velocity:
Define:
displacement of an object over a period of time. The distance traveled in a particular direction over some time. If you walk in a straight line you have no dispacement up or down, so in the y-direction you have no velocity but in the x direction you have some velocity.Unit:
m/s traveled in a single directionExample:
Velocity is direction based. So, in the case of this picture, the distance traveled is 0 so the average velocity of the gilr is zero when she meets the point where she started. This is so because she returns to her original position. Because the average velocity is direction based and she went just as far up as she went down and just ar far right as she did left all of her movement is negligable since she ultimatly traveled nowhere.
*note: velocity can be negative. If the positive direction is to the right and you go to the left you are traveling in a negative direction, thus making your velocity negative
Equations:
Unlike instantaneous velocity, average velocity is.....
Instantaneouse velocity: is the velcocity that you are traveling at that moment.Average speed: This is the velocity that you have traveled over a period of time on average. So if you go in a negative direction for a longer time than you go in a positive direction then your average velocity is the distance traveled in the negative direction from your start point over the time of all your travel.
sources:
http://www.worsleyschool.net/science/files/average/velocity.html