1.  What is physics?

2. Explains & predicts the nature of basic concepts The fundamental science: It supports Chemistry which in turn, supports Biology

3. Recognize a problem Make a hypothesis about the answer Predict the consequences of the hypothesis Test predictions Form a general rule

4. Fact: Close agreement on a subject by competent individuals Hypothesis: An educated guess Law: A hypothesis which has not been contradicted

5. All of these aspects of science undergo change as tech- nology improves Theory: A synthesis of many well tested hypotheses and laws

6. Scientific hypotheses must be testable Cannot be statements of opinion There must be a method of attempting to prove it false

7.  There must be some means of attempting to prove a hypothesis wrong.  For example: “The alignment of planets in the sky determines the best time for making decisions.” ▪ This is NOT a scientific hypothesis because it cannot be proven wrong or right. ▪ It is only a speculation.

8.  For example: “No material object can travel faster than light.” ▪ This IS a scientific hypothesis. ▪ Even if it were supported by 1000 experiments, it could be proven wrong by a single experiment.

9.  Conceptual physics allows us to look past the mathematics and really understand the concepts. ▪ Once the concepts are grasped, the mathematics will come more easily.

10. Abbreviates large and small numbers to perform computations Take the form: N x 10 n, where 1 ≤ N < 10 and n is an integer Positive Exponents: For numbers greater than 10 Negative Exponents: For numbers between 0 and 1

11.  2300  456700 .00792 .00000008

12.  There are many primary units  Mass Kilogram (kg)  Time Second (s)  Length Meter (m)  There are many derived units as well

13.  kilok1 000= 10 3  hectoh100= 10 2  decada10= 10 1  Base Unit  decid0.1= 10 -1  centic0.01= 10 -2  millim0.001= 10 -3

14.  There are many primary units  Mass Kilogram (kg)  Time Second (s)  Length Meter (m)  There are many derived units as well

15.  8.98 mg to g  3.34 mm to cm  1.23 ml to L

16.  Solve for each variable in the following equations

17.  Convert the following  980.3 m to km .0006 cm to m  Solve for x

18.  Precision  “Grouped” results  Shows a trend  Accuracy  “On target” results  Near expected Values

19. Things to remember Independent variable on x-axis Dependent variable on y-axis Label both axes with titles AND units Title the graph – Figure #: Title Choose a suitable scale Be sure graph is evenly spread

20. Graphing Plot your points Estimate and draw a trend line with a ruler Be sure it intersects the y-axis Determine the slope of the trend line NOT the actual points Look for points of intersection m =  y/  x

21. Graphing Solve for the y-intercept of the trend line using a point on that line (= b) Determine the equation of the line (y = mx + b)

22. Figure 1: Height vs. Time Height (m) Time (s) 12345 1 2 3 4 5 6 7