2006-10-22 12:40:16 · 4 answers · asked by Rachel N 1 in Science & Mathematics ➔ Physics
Friction between the tires and the road, wind resistance, and drag in the powertrain, to name a few for the opposition. Power applied to the road from the drivetrain for forward momentum, and also inertia.
2006-10-22 12:42:31 · answer #1 · answered by Mike G 3 · 0⤊ 0⤋
There is no NET horizontal force on a car moving at constant speed. However, there are forces acting on the car: driving force from the engine, and frictional forces (air, road). These will cancel each other when the car is at constant speed.
2006-10-22 12:43:49 · answer #2 · answered by gp4rts 7 · 0⤊ 0⤋
Cross winds come to mind. Also, you don't mention if the car is traveling in a straight line, or on a curve. There could be centrifugal force coming into play. Is the car driving by itself? Or is there other traffic? Have you ever been passed by a semi? Serious vacuum pull!
2006-10-22 12:44:09 · answer #3 · answered by RepoMan18 4 · 0⤊ 0⤋
On flat ground, no. On a hill, yes.
2006-10-22 12:42:52 · answer #4 · answered by Anonymous · 0⤊ 0⤋