A person who is 180 cm tall and weighs 750 newtons is driving a car at a speed of 90 kilometers per hour over a distance of 80 kilometers. The outside air temperature is 30^\circ∘C and has a density of 1.2 kilograms per cubic meter (kg/m3). Convert all of the values given in this example from SI units to U.S. Customary units.

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boffeemadrid boffeemadrid · Answer 1 · 2019-12-13T09:18:15+01:00

Answer:

5.90551 ft

168.6151 lbf

55.92354 mph

49.70981 mi

0.07491 lb/ft³

Explanation:

Convert cm to ft

[tex]1\ cm=\dfrac{1}{30.48}\ ft[/tex]

[tex]180\ cm=180\times \dfrac{1}{30.48}\ ft=5.90551\ ft[/tex]

180 cm = 5.90551 ft

Convert N to lbf

[tex]1\ N=\dfrac{1}{4.448}\ lbf[/tex]

[tex]750\ N=750\times \dfrac{1}{4.448}\ lbf=168.6151\ lbf[/tex]

750 N = 168.6151 lbf

Convert kmph to mph

[tex]1\ kmph=\dfrac{1}{1.60934}\ mph[/tex]

[tex]90\ kmph=90\times \dfrac{1}{1.60934}=55.92354\ mph[/tex]

90 kmph = 55.92354 mph

Convert km to mi

[tex]1\ km=\dfrac{1}{1.60934}\ mi[/tex]

[tex]80\ km=80\times \dfrac{1}{1.60934}=49.70981\ mi[/tex]

80 km = 49.70981 mi

Convert °C to °F

[tex]^{\circ}C=(^{\circ}C\times \dfrac{9}{5})+32[/tex]

[tex]30^{\circ}C=(30^{\circ}C\times \dfrac{9}{5})+32=86^{\circ}F[/tex]

30°C = 86°F

Convert kg/m³ to lb/ft³

[tex]1\ kg/m^3=\dfrac{2.20462}{3.28084^3}\ lb/ft^3[/tex]

[tex]1.2\ kg/m^3=1.2\times \dfrac{2.20462}{3.28084^3}=0.07491\ lb/ft^3[/tex]

1.2 kg/m³ = 0.07491 lb/ft³