Question

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.

Answer 1

5.90551 ft

168.6151 lbf

55.92354 mph

49.70981 mi

0.07491 lb/ft³

Step-by-step explanation:

Convert cm to ft

`1\ cm=(1)/(30.48)\ ft`

`180\ cm=180* (1)/(30.48)\ ft=5.90551\ ft`

180 cm = 5.90551 ft

Convert N to lbf

`1\ N=(1)/(4.448)\ lbf`

`750\ N=750* (1)/(4.448)\ lbf=168.6151\ lbf`

750 N = 168.6151 lbf

Convert kmph to mph

`1\ kmph=(1)/(1.60934)\ mph`

`90\ kmph=90* (1)/(1.60934)=55.92354\ mph`

90 kmph = 55.92354 mph

Convert km to mi

`1\ km=(1)/(1.60934)\ mi`

`80\ km=80* (1)/(1.60934)=49.70981\ mi`

80 km = 49.70981 mi

Convert °C to °F

`^(\circ)C=(^(\circ)C* (9)/(5))+32`

`30^(\circ)C=(30^(\circ)C* (9)/(5))+32=86^(\circ)F`

30°C = 86°F

Convert kg/m³ to lb/ft³

`1\ kg/m^3=(2.20462)/(3.28084^3)\ lb/ft^3`

`1.2\ kg/m^3=1.2* (2.20462)/(3.28084^3)=0.07491\ lb/ft^3`

1.2 kg/m³ = 0.07491 lb/ft³