1
Q
what is smog formed from
A
- emissions of hydrocarbons reacting with sunlight
- the Hydrocarbons get trapped and cook in the sun
- these gases produce ozone and other chemicals that form smog
2
Q
what are factors that contribute to air quality due to cars?
A
- increasing vehicle population
- increasing travel per vehicle
- Departures from federal standards
- greater use of light trucks
3
Q
what are some other environmental impacts due to cars (4)
A
- lead emissions from tetraethyl lead in gas
- CFCs in AC
- Waste motor oil
- release of PM from tire wear and brake dust
4
Q
formula for energy needed to push a car on a flat surface
A
E=Fd (work)
5
Q
Power formula
A
P=F*v
6
Q
Friction formula
A
F=u*(W)
7
Q
Drag formula
A
F=0.5*CApv^2
8
Q
total force required to propel car
A
F=Fdrag +Ffriction
9
Q
energy effieciency formula
A
E/Efuel
10
Q
engine efficiency
A
Eshaft/Efuel
11
Q
what mpg does the corporate average fuel economy require?
A
27.5 mpg
ENGR 202 Final
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