Unit 1

In Unit we learned about accuracy, precision, different types of graphs, pendulums, scientific notation, and dimensional analysis.

Accuracy- the closeness of a measurement to the actual value

Precision-the consistency of measurements repeatability of results
The picture of the bull eyes represent accuracy and precision. The first bulls eye shows high accuracy and high precision because the darts hit the middle and hit the middle a bunch of times. The middle bulls eye shows low accuracy and low precision because the darts didn't hit the middle and didn't hit the same spot. The last bulls eye shows low accuracy because the darts didn't hit the middle, but high precision because they hit the same spot every time.
The second picture shows a bunch of different graphs which were major in our learning these past two days.
The first graph shows how the two variables have no relationship. As x increases, y remains the same.
The second graph shows how y is directly proportional to x. As x increases, y increases proportionally.
The third graph shows how y is inversely proportional to x. As x increases, y decreases
The fourth graph shows how y is proportional to the square of x.
The fifth graph shows how the square of y is proportional to x. (square root)

We also learned about dependent and independent variables.
 X is usually the independent variable and Y is usually the dependent variable. Y depends on X.

Accuracy, precision and the different graphs have been very major in our few days of learning of physics.