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# Welcome to Physics PowerPoint PPT Presentation

Welcome to Physics. Mr. Hernandez Room 274. Supplies needed. Needed everyday Binder 1” or 2” 1” good for one semester 2 ” good for whole year Pencil and a Pen Pencil # 2 Pen must be Blue or Black ink!. Supplies needed continued…. GPS Planner Use it! Composition Book

Welcome to Physics

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## Welcome to Physics

Mr. Hernandez

Room 274

### Supplies needed

• Needed everyday

• Binder 1” or 2”

• 1” good for one semester

• 2” good for whole year

• Pencil and a Pen

• Pencil # 2

• Pen must be Blue or Black ink!

### Supplies needed continued…

• GPS Planner

• Use it!

• Composition Book

• Lab write ups

• Calculator

• Oh yeah you need that!

• Physics book

• Not in here

Tera (Trillion): 1012

Giga (Billion): 109

Mega (Million): 106

kilo (thousand): 103

hecto (hundred): 102

Deka (ten): 101

deci (tenth): 10-1

centi (hundredth): 10-2

milli (thousandth): 10-3

micro (millionth): 10-6

nano (billionth): 10-9

pico (trillionth): 10-12

base: 100

### T - - G - - M - - k h Dk (b) d c m - -m - - n -- p

• To convert from, say, kilometers to centimeters, write your quantity:

10 km

• Don’t forget to include your decimal point!!!

• Count the number of spaces from “k” to “c”

• Move the decimal that many spaces in that direction.

10,000 km

100,000 km

10 km

100 km

1,000 km

1,000,000 cm

### T G Mk h Dk (b) d c mm n p

• A couple of things to keep in mind:

• The letters in black differ by one decimal place

• The letters in red differ by three decimal places

Meters (m)

Seconds (sec)

Grams (g)

Liters (L)

Hertz (Hz)

Newtons (N)

Joules (J)

Watts (W)

Volt (V)

### T G Mk h Dk (b) d c mm n p

Some base units used in Physics:

### Scientific Notation

• To convert from regular to scientific:

24,560,000,000 kg

• Move the decimal point so that the number is between 1 and 9 (count the number of places that it moved)

• Round the decimal part to the second place

• Slap a “x 10” at the end of the number

• Give the 10 an exponent- the number of spaces you counted

• If you moved the decimal to left: (+) exp.

• If you moved it to the right: (-) exp.

2.4560000000 kg

2.46 x 1010 kg

2.46 kg

2.46 x 10 kg

Let’s say we have this goofy-lookin’ equation:

New Line!

And you must solve for “v”

Circle Mr. Stinky

Identify the furthest thing from Mr. Stinky & how it’s connected (+, -, x, or ÷) – Reverse order of operations

Make it move to the other side of the equal sign by doing the opposite function

Just make sure you do it to BOTH sides of the equal sign!!!!

Write a new line & repeat the process!

### Solving Equations

x

KE

=

m

v2

x

2KE=

m

v2

m

m

v2

Let’s say we have this goofy-lookin’ equation:

New Line!!!

And you must solve for “a”

Circle Mr. Stinky

Identify the furthest thing from Mr. Stinky & how it’s connected (+, -, x, or ÷) – Reverse order of operations

Make it move to the other side of the equal sign by doing the opposite function

Just make sure you do it to BOTH sides of the equal sign!!!!

Write a new line & repeat the process!

2

2

-vt

-vt

(

)