In class we were discussing the definition of important terms and where we may find them in a graph. In my opinion, I feel our class had the right idea..but not the full grasp of it. The words that needed a definition included: distance, position, displacement, speed, velocity, speed vs. time, & velocity vs. time. I went ahead and look up the dictionary.com definition for them. Heres what they are:
Distance: the interval between two points of time; an extent of time
Position: condition with reference to place; location; situation
Displacement: the linear or angular distance in a given direction between a body point and a reference position
Speed: refers to "how fast an object is moving." Speed can be thought of as the rate at which an object covers distance
Velocity: refers to "the rate at which an object changes its position."
Position vs. Time: shows- speed, acceleration & distance
Velocity vs. Time: shows- displacement, acceleration
In class we have spend a lot of time talking about starting point and reference point. I believe, the starting point is the first point included on the graph. The starting point is where you started moving, this point should be the y-intercept. On the other hand, the reference point SHOULD NOT be included on the graph. The reference point should only be used to give the person looking at the graph for more of a better understanding of the graph. For example, if you needed it come to my house I would tell you my address first, because this is necessary to know otherwise you wouldn't be able to come to my house! But on the side I could tell you my house is next to a white house. These information isn't NECESSARY but I gave it to so it would be easier to locate my house.
Lastly, here are some pictures showing differences in x vs. time and v vs. time graphs
Credits:
-dictionary.com
-http://www.physicsclassroom.com/class/1DKin/Lesson-1/Speed-and-Velocity
-http://www.physicsclassroom.com/Class/1Dkin/U1L3a.html
-http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=7&ved=0CE4QFjAG&url=http%3A%2F%2Fwww.waynecountyschools.org%2Fcms%2Flib6%2FNC01000512%2FCentricity%2FDomain%2F2184%2FPhysUnits%2FPhysUnit1%2FPosition-Time%2520and%2520Velocity-Time%2520Graphs.ppt&ei=dr9nVMimLcXOsQTl_4D4AQ&usg=AFQjCNEX8cJJ9Ms9XgYI_VFuH-McxUc34Q&sig2=FaOd5GZRIkMjUlHjg45rVw&bvm=bv.79142246,d.cWc
-http://physics20project.weebly.com/unit-1-kinematics.html
Distance: the interval between two points of time; an extent of time
Position: condition with reference to place; location; situation
Displacement: the linear or angular distance in a given direction between a body point and a reference position
Speed: refers to "how fast an object is moving." Speed can be thought of as the rate at which an object covers distance
Velocity: refers to "the rate at which an object changes its position."
Position vs. Time: shows- speed, acceleration & distance
Velocity vs. Time: shows- displacement, acceleration
In class we have spend a lot of time talking about starting point and reference point. I believe, the starting point is the first point included on the graph. The starting point is where you started moving, this point should be the y-intercept. On the other hand, the reference point SHOULD NOT be included on the graph. The reference point should only be used to give the person looking at the graph for more of a better understanding of the graph. For example, if you needed it come to my house I would tell you my address first, because this is necessary to know otherwise you wouldn't be able to come to my house! But on the side I could tell you my house is next to a white house. These information isn't NECESSARY but I gave it to so it would be easier to locate my house.
Lastly, here are some pictures showing differences in x vs. time and v vs. time graphs
Credits:
-dictionary.com
-http://www.physicsclassroom.com/class/1DKin/Lesson-1/Speed-and-Velocity
-http://www.physicsclassroom.com/Class/1Dkin/U1L3a.html
-http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=7&ved=0CE4QFjAG&url=http%3A%2F%2Fwww.waynecountyschools.org%2Fcms%2Flib6%2FNC01000512%2FCentricity%2FDomain%2F2184%2FPhysUnits%2FPhysUnit1%2FPosition-Time%2520and%2520Velocity-Time%2520Graphs.ppt&ei=dr9nVMimLcXOsQTl_4D4AQ&usg=AFQjCNEX8cJJ9Ms9XgYI_VFuH-McxUc34Q&sig2=FaOd5GZRIkMjUlHjg45rVw&bvm=bv.79142246,d.cWc
-http://physics20project.weebly.com/unit-1-kinematics.html