ความคิดเห็นที่ 17
"A modern car (drag coefficient 0.34) with a 110 kW (150 HP) engine
will be using about 4.6 kW (6 HP) of power to overcome air drag
and 11 kW (14 HP) for mechanical propulsion (rolling resistance etc.)
when it is being driven at a constant 80 km/h (22.2 m/s, 49 mph).
When driving at its top speed of 210 km/h (58 m/s, 128 mph)
it will be using 82 kW (112 HP) to overcome drag and the
remaining 28 kW (38 HP) to overcome rolling resistance etc."
จากคุณ :
ton99 
- [
10 เม.ย. 48 01:54:02
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