... , that it is necessary to keep your foot on the accelerator to keep a car moving at a constant speed. Keeping your foot on the accelerator means that you are making the engine apply a backward force to the ground, which applies a reaction force forward on the car, to keep the car moving. A late model Corvette, for example, has a top speed of about 240 ... of external forces that tend to slow it down. Without these forces, the car would coast forever as guaranteed by Newton's first law. You must counteract these forces with the engine, which indirectly creates a reaction force that keeps ...

• Word Count: 2784
• Approx Pages: 11
• Has Bibliography
• Grade Level: High School

... in its wake. A small resemblance of a vacuum occurs and air will gradually move in and fill the depression of low-pressure air. Draft: Most of the horsepower generated by an engine is eaten up by the high-pressure air pushing the front of the car and the low-pressure air (a partial vacuum) dragging at the car from behind. When another car ... ...

• Word Count: 3179
• Approx Pages: 13
• Grade Level: High School