Your Car Is Coasting on Level Ground at 60 Km/h

question 51

Multiple Choice

Your car is coasting on level ground at 60 km/h and you apply the brakes until the car slows to 40 km/h. If you suddenly release the brakes now, the car tends to

• A) decrease in speed if no other forces act.
• B) continue moving at 40 km/h.
• C) momentarily regain its higher initial speed.

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Definitions:

Energy Metabolism

The process by which living organisms produce energy, through the conversion of food into usable chemical energy.

Closed System

An entity that does not exchange energy with its surroundings. Compare with open system.

Noncompetitive Inhibition

The binding of a substance (the noncompetitive inhibitor) to a site other than the active site of an enzyme, thereby lowering the rate at which the enzyme catalyzes a reaction. Compare with competitive inhibition.

Catalysts

Compounds that accelerate the speed of chemical reactions without being used up during the reaction.