Transcript Where do you think most of the energy from the fuel ends

TRANSPORTATION
Energy Use in Cars 2:
Constant Speed Cruising
Multiple-Choice Questions
Physics and Astronomy Outreach Program at the University of British Columbia
Energy in Cars 2
How could we reduce the energy cost of travelling at
constant speed?
1.Design a car with a more long & thin shape
2.Drive more slowly
3.Make the car much lighter
4.Inflate the tires
5.Get a regenerative braking system
Physics and Astronomy Outreach Program at the University of British Columbia
Energy in Cars 2
How could we reduce the energy cost of travelling at
constant speed?
1.Design a car with a more long & thin shape
2.Drive more slowly
3.Make the car much lighter
4.Inflate the tires
5.Get a regenerative braking system
Physics and Astronomy Outreach Program at the University of British Columbia
Energy in Cars 2
In Energy in Cars 2: Constant Speed Cruising the
amount of energy consumed is related to the car’s
velocity (v) and its size (the volume of the cylinder of
air that it disturbs (proportional to Acar)).
KE 
1
2
 A car C D dv
2
In Energy in Cars 3 energy savings from tire inflation
is explored.
Physics and Astronomy Outreach Program at the University of British Columbia