chapter 1 unit 1a
Download
Skip this Video
Download Presentation
Chapter 1 Unit 1a

Loading in 2 Seconds...

play fullscreen
1 / 19

Chapter 1 Unit 1a - PowerPoint PPT Presentation


  • 88 Views
  • Uploaded on

Physics tools!. Chapter 1 Unit 1a. http://wingclips.com/cart.php?target=product&product_id=16912&category_id=23. Essential Questions. What is Physics? Why do scientists use the metric system, instead of the English or some other system?.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Chapter 1 Unit 1a' - acacia


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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
chapter 1 unit 1a

Physics tools!

Chapter 1

Unit 1a

slide2
http://wingclips.com/cart.php?target=product&product_id=16912&category_id=23http://wingclips.com/cart.php?target=product&product_id=16912&category_id=23
essential questions
Essential Questions
  • What is Physics?
  • Why do scientists use the metric system, instead of the English or some other system?
slide5

Now, you measure the length and width of your table only using your hands and or feet or some other means.

  • Write down your results so we can go over them as a class.
  • Compare your results with the grop next to you.
  • How difficult is it to compare your results with all of these different unit systems?
slide6

Topics in Physics

The study of motion and what causes motion.

Mechanics:

The study of heat and temperature.

Thermodynamics:

The study of specific types

respective motions.

Waves and Vibrations:

The study of electricity, magnetism

and light.

Electromagnetism:

Relativity:

The study of particles moving at any speed.

The study of the behavior of

submicroscopic particles.

Quantum mechanics:

slide7

Scientific Method

1. Make observations and collect data that lead to a question.

2. Formulate and objectively test hypotheses by experiments.

Hypotheses: A reasonable explanation for observations – one

that can be tested with additional experiments.

3. Interpret results, and revise the hypothesis if necessary.

4. State a conclusions in a form that can be evaluated by others.

Controlled experiment: A experiment involving the manipulation

of a single variable or factor.

slide8

SI Standard Units

Length: meters ( m )

Time: seconds ( s )

Speed: meters per seconds ( m/s )

Acceleration: meters per second squared ( m/s2 )

Mass: Kilograms ( kg )

slide9

Prefix

Abbreviation

Value

Tera

T

1012

Giga

G

109

Mega

M

106

Kilo

k

103

Hecto

h

102

Deka

da

101

Deci

d

10-1

Centi

c

10-2

Milli

m

10-3

Micro

µ

10-6

Nano

n

10-9

Pico

p

10-12

Femto

f

10-15

Metric Multipliers

slide10

Length Conversions:

1 km = 1000 m = 100,000 cm = 1,000,000 mm

1 m = 0.001 km = 100 cm = 1000 mm

1 cm = 0.00001 km = 0.01 m = 10 mm

1 mm = 0.000001 km = 0.001 m = 0.1 cm

Time Conversions:

1 year = 365 days = 8760 hr = 5.256 x 105 min 1 day = 24 hr = 1440 min = 8.64 x 104 s

1 hr = 60 min = 3600 s

1 min = 60 s

Mass Conversions:

1 kg = 1000 gm = 1,000,000 mg

1 gm = 1000 mg = 0.001 kg

1 mg = 0.001 gm = 0.00001 k

slide11

Significant Figures

1. Zeros between other nonzero digits are significant.

50.3 m, has 3 significant digits.

2. Zeros in front of nonzero digits are not significant.

0.0008 ms, has one significant digit.

  • Zero that are at the end of a number and also to the
  • right of the decimal are significant.

57.00, has 4 significant digits.

  • Zeros at the end of a number but not to the left of a
  • decimal are significant. But we will not treat them as
  • significant.

20, has one significant digit.

slide12

Convert 75 km to cm.

75 km

1 cm

= 7.5 x 106 cm

10-5 km

75 km

1000 m

100 cm

= 7.5 x 106 cm

1 km

1 m

slide13

Convert 85 cm/min to m/s

85 cm

1 m

1 min

= 1.4 x 10-2 m/s

60 s

102 cm

min

Convert 50g to kg.

50 g

1 kg

= 0.05 kg

103 g

slide14

Convert 54 mm to m.

5.4 x 10-2 m or 0.054 m

Convert 3.5 kg to g

3.5 x 103 g

Convert 105 km/h to m/s

29.2 m/s

slide15

Dimensional Analysis

?

vf and viare in m/s

t in s

a in m/s2

vf = vi + at

OK

slide16

viin m/s

t in s

a in m/s2

d in m

?

Will not work

slide17

?

vf = vi2 + 2ad

NO

?

d = vit + ½ at2

Yes

slide18

So,

What is Physics?

ad