Page 468 - Schaum's Outline of Theory and Problems of Applied Physics

APPENDIX B

Conversion Factors

Time
4
3
1 day = 1.44 × 10 min = 8.64 × 10 s
3
5
7
1yr = 8.76 × 10 h = 5.26 × 10 min = 3.15 × 10 s
Length
1 meter (m) = 100 cm = 39.4 in. = 3.28 ft
1 centimeter (cm) = 10 millimeters (mm) = 0.394 in.
3
1 kilometer (km) = 10 m = 0.621 mi
1 foot (ft) = 12 in. = 0.305 m = 30.5 cm
1 inch (in.) = 0.0833 ft = 2.54 cm = 0.0254 m
1 mile (mi) = 5280 ft = 1.61 km

Area
3
2
2
4
2
1m = 10 cm = 1.55 × 10 in. = 10.76 ft 2
2
2
1cm = 10 −4 m = 0.155 in. 2
2
2
2
1ft = 144 in. = 9.29 × 10 −2 m = 929 cm 2
Volume
6
4
3
3
3
3
1m = 10 L = 10 cm = 35.3ft = 6.10 × 10 in. 3
3
3
2
1ft = 1728 in. = 2.83 × 10 −2 m = 28.3L
Velocity
1 m/s = 3.28 ft/s = 2.24 mi/h = 3.60 km/h
1 ft/s = 0.305 m/s = 0.682 mi/h = 1.10 km/h
(Note: It is often convenient to remember that 88 ft/s = 60 mi/h.)
1 km/h = 0.278 m/s = 0.913 ft/s = 0.621 mi/h
1 mi/h = 1.47 ft/s = 0.447 m/s = 1.61 km/h
Mass
3
1 kilogram (kg) = 10 grams (g) = 0.0685 slug
(Note: 1 kg corresponds to 2.21 lb in the sense that the weight
of 1 kg at the earth’s surface is 2.21 lb.)
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