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Motion Section 1 (Speed/Velocity)

Added Aug 03, 2018 •

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hey guys very first video that you guys have to watch so far and this is the first one I recorded so let's see how this goes so we're going to do and any point you can pause this and write down any notes you need to do you'll see checked on your nose to go ahead and go to video let me know how the frame of reference use to describe motion misses the chapter on motion and several things like that difference between speed and velocity speed really basic stuff to begin with and then how can you study speed by using graphing may just wait until this in the classroom so she started what is motion how do you know something is in the background movie how do you know if something is well that is what I will return with respect to a frame of reference to the object is in how did we know this hands movie not because my hands were hurting after the frame of reference is everything around the camp if you're trying to decide if something is moving to look at everything is everything around it to be able to what are the brown cabinet in the background around I'm the object to know whether or not it's living that is a frame of reference sounds like if I was moving across the class and you would look at the things behind me if you're out by the way how do you know if you look at the boat you can see the trees in the whatever's in the background and then it's getting further away from these objects and closer to the Sun. Ricotta reference point outside definition definition of motion motion is an object change in position relative at this point the Smartboard weather to the cabinet whatever it is around it that is how you know motion is happen and then here is the definition that you'll need for reference point or frame of reference the precise location of the next minute speed directions to versus displacement displacement a little bit different and distance distance so when you come to school you take a certain time to take a right go down the street all the different streets the change of an object from where I started to where it ended so let's say that you are 5 miles away from total distance for the day father 10 Mile but the change in position if you start out your day in bed you get up and go Styles in different places you come back you send your day in that same bed then your displacement is zero because you in the end have not change position even all over the place that you have not really changed position because you're back in the same spot you were what direction the soccer player on him if you look at the black line there start over here where he's in gold and a hand up over here where shirt is red that straight-line path right there that black line going from the gold shirt to the red shirt is that the change in position over here about to go if you ended up here on the sidelines that's the change it to his nuts the displacement put the Kathy took all the way around the field that's the distance there's a definition for displacement that's what you need to write that down change in position of an object is displacement always includes directions and we are going to figure some problems that will have to work alright so now that we've looked at objects what motion is and I'm having kind of measure that a little bit with distance and displacement let's look at how fast we can calculate we can look at what the velocity is the difference between speed and velocity of an object moving by velocity covers how fast but in also in what the rep says that's not the only difference between add a direction north south down the hall up the street down the field across the river over the river and through the yellow lines because of how fast just right on the definition for speed in the definition for Saturday distance over time and then velocity vector magnitude and Direction magnitude and direction is velocity aura I believe calculate distance to whatever travel whether whether it was a car a person walking a ball that is thrown the distance it traveled and you divide that by the time it if you're driving from here from your house to Walker Valley in it and get this video and that would be miles in minutes to miles per minute to meters per second in kilometers per hour Oregon speed equals distance over time or Vehicles DL dirty and in class another way to write this out with a triangle and you'll be able to do it that way actually I'm not write this down in your notes right here you got a Time you may not be able to do it on this year speed or velocity distance goes up here is distance over time or if it's asking me how long something to have you take that same distance put it over the speed time equals distance over speed or if it says you travel you how many kilometers did you travel if you're going miss feed for this multiply this together and it's just in time time is meters per second time is measured in seconds and you also have kilometers per hour if your distances in kilometers divided by your hours single distance over time things you need to know to be able to calculate constant speed I don't know if you can see the time at 10 equal amount of time you're going 45 miles an hour instantaneous speed and how does it apply in the instantaneous that you're driving down the street you're doing 55 in a 45 there's a cop with a radar at that instant when he when the radar hit your car at that instant you were going 45 and it registers on the radar registers on the radar, sometimes pull you over so that is all for this video so let's recap real quick go back to the beginning how's the frame of reference used to describe motion you got to look at that just things around at that frame of reference all the objects in that states around what you're looking at to see if it's moving that tells you how to know something what's the difference between speed and velocity velocity velocity also includes directions what do you need to know to find the speed of an object the distance traveled and the time it took for that last thing we will go over in class make sure you have these notes in class

Uploaded by Craig Long.

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Motion Section 1 (Speed/Velocity)

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