Adv Science

Image: Khan Academy Summary:  If you were walking down the street and turned right, did you accelerate? While most people would say no, change in direction is, in fact, a form of acceleration. Acceleration doesn't just mean increasing speed, it is change in velocity. The formula for acceleration is change in velocity divided by time and it is measured in units of distance units of time squared. An example of this would be 60 meters per second squared. Acceleration is a vector quantity because direction plays a factor in acceleration. (Vector quantities are measured as magnitude with direction.) Like mentioned before, people assume acceleration has an association with the term 'speeding up' although this is not the complete definition. Even slowing down is considered acceleration, although more often than not it is referred to as deceleration. S&EP-Using Mathematics: When people think of science, most people see lab work and experiments, but lately, through...

Question: Which section of the graph represents the highest speed? Wrong Answer: The last section, where the time is 185 seconds to 200 seconds. Correct Answer: The first point of data in which the time is 20 seconds and the distance is 15 meters. Why: The reason the first point was correct is because you have to find the speed of each point, meaning you divide the distance by the time. If you do this you will get that Point A- 0.75, Point B- 0.5, Point C- 0.61, Point D- 0.53, Point E- 0.48,  and Point F- 0.5. Through this, you can see that the first point, Point A, clearly has the fastest speed.I got this problem wrong because I misinterpreted it. I thought it was asking for the greatest change in speed, but using the distance over time formula I was able to resolve this conflict.

Image:  Summary:  Speed is so called, a distance over time, but what actually is speed and what does it have to dow ith velocity? Speed is a scalar quantity, whereas velocity is a vector quantity meaning speed just measures "How fast?" whereas velocity measures "How fast?" with direction. An example of speed is 60 mph, while an example of velocity would be 60 mph north. It is important to know the velocity, as well as speed because if not, it could create a conflict. For instance, if a missile is flying at 7,500 mph and you do not know which way it is going it could possibly hit you. Although this is a far-fetched example not knowing velocity could create conflict in the simplest environments like a street corner. All in all, speed and velocity aren't that different, but the difference is key because it is what makes one a scalar quantity and the other a vector. Fun Fact: You can use graphs to determine speed using rise over r...

Image : The Science Classroom Summary:  A scalar quantity measures the magnitude of something, whereas a vector quantity measures both the magnitude and the direction. Magnitude doesn't have to do with speed, it is just a number that measures something. For example; How big? How far? How fast? An example of a scalar quantity would be 60 mph, while a vector quantity would be 60 mph east. Speed is a scalar quantity, whereas velocity is a vector quantity. It is important to know the velocity, as well as speed because if not, it could create a conflict. Another way to measure motion is to use reference points. You can tell if something is moving if its position changes in relation to a stagnant or non-moving reference point. An example of this would be using a tree as a reference point because it doesn't move. If the distance between something and the tree were to change the object is moving. S&EP-Using Models/Diagrams:   Distance repr...