1 / 10

Honors Physics (Power Point #1)

Honors Physics (Power Point #1). Measurement and Significant figures. The metric system (p.12). We will use the MKS (meters, kilograms, and seconds) unit system in this class.

rudolf
Télécharger la présentation

Honors Physics (Power Point #1)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Honors Physics (Power Point #1) Measurement and Significant figures.

  2. The metric system (p.12) • We will use the MKS (meters, kilograms, and seconds) unit system in this class. • The early part of the course will include some simple conversions and you will develop some awareness of “how large or small” a quantity is compared to known values in the English system (mi/hr, miles, etc.)

  3. A cartoon…

  4. The metric system (p. 12)

  5. A first question: • How long is a micro Century (1 X 10 -6 Century) in minutes?

  6. Significant figures… • Read pp. 18-19 for specifics... The racetrack lab and the following example are used as a tutorial. • I do not get overly technical about this, but DO NOT write down all the digits in your calculator. • All homework answers will try to utilize the correct significant figures. • In problem solving… • (a) Round at the end of the problem • (b) You only can be as precise as your least precise measurement. • (c) You are allowed to carry one digit beyond what you can safely measure.

  7. Racetrack Lab Problem…. • A kangaroo hops a distance of 40.000 m in 3.6 seconds. One 5.000 m interval resulted in a change in time ( sec). • (a) What is the average speed of the kangaroo in m/s? (Show work and proper sig. figs) (b) What is the instantaneous speed (speedometer speed) of the kangaroo?

  8. Racetrack Lab Problem Continued… • (c) What is the average speed of the kangaroo in… • (i) km/hr • (ii) mi/hr (1 mi. =1.609 km)

  9. Comparison to other animals maximum speed… • In the air… • Housefly (5 mph), Bat (15 mph), Robin (30 mph), Hummingbird (60 mph), Golden eagle (120 mph) • On land… • Turtle (0.1 mph), Human(20 mph), Greyhound (40 mph), Jack Rabbit (45 mph), Cheetah (70 mph) • In the Water • Goldfish (4 mph), Man (5 mph), Dolphin (20 mph), Barracuda (30 mph)

  10. Drawing a graph… VELOCITY is the SLOPE of a distance, position, or displacement vs. time graph.

More Related