ch1phys

1-1 Motion
Right side
Vocabulary
    motion-
    reference point -
1.    Object is in motion if it change's position relative to a reference point.
2.    Calculating speed
    A. speed is a type of rate
    B. rate tells you the amount of something that occurs or change's in one unit of time
    C. formula
            speed = distance/time   or time = distance/speed    or distance = speed x time
3.    Constant speed
    A. speed doesn't change = constant
    B. ex. ship traveling once it reaches cruising speed = constant speed
4.    Average speed
    A. add distances and time
    B. formula
            average speed = total distance/total time
5.    Velocity
    A speed and direction of movement
Summary

Left side
practice problems

1-2 Converting Units
right side
1.    Converting
    A. you can convrt one unit of measurement to another
    B. use a conversion factor
        1. fraction - denominator and numerator are equal
        2. units
            a. m = meter
            b. d = day
            c. yr = year
            d. cm = centimenter
            e. hr = hour
            f. s = seconds
2.    Examples
    A. 1 yr equal to 365 days (not 365 1/4 as it should be!)
        1 yr/365 d        or     365 d/1 yr

B. 1 hr is equal to 60 minutes
1 hr/60 min or 60 min/1 hr

C. 1 min is equal to 60 seconds
1 min/60 s or 60 s/1 min

D. 1 day is equal to 24 hours
1 d/24hr or 24 hr/1 d

summary

left side
wksht.

1-3 Acceleration
Right side
outline given in class

Left side
practice problems pg 29