No Title
PH111 - MECHANICS
Quiz 1
                                                                                                           
Friday 9/04/15 Name
O101: periods 1,2
CM#

1 mi=5280 ft
1 m=3.28 ft
1 h=3600 s
  1. Convert 48.0 mi/h to m/s.

    48.0  mi
    h
    =
    æ
    è     		48.0  mi
    h
    		 ö
    ø     		æ
    è     		1 h
    3600 s
    		 ö
    ø     		æ
    è     		5280  ft
    mi
    		 ö
    ø     		æ
    è     		1 m
    3.28 ft
    		 ö
    ø
    =
    21.5 m/s
  2. Indicate the number of significant figures in each of the four numbers given below.
    3.09
    0.079
    300
    9.124×10-5

    3
    2
    1 or 3
    4
  3. Compute the following, retaining the correct number of significant figures.
    A = (6.15)(3.9)
    1.705
    		 - 2.6

    A
    =
    14.07-2.6
    =
    11
    The 0.07 digits are NOT significant. The dividing line is at the decimal point.


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On 04 Sep 2015, 15:57.