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Final Answer:There are three primary controls in a car that can be used to cause acceleration: theaccelerator pedal, the brake pedal, and the gear shifter. These controls work together to produce various accelerations depending on how they are used.Explanation:In anautomobile, acceleration is the result of three main controls: the accelerator pedal, the brake pedal, and the gear shifter. Let's break down how each of these controls contributes to acceleration.Accelerator Pedal: The most obvious control for acceleration is the accelerator pedal, commonly referred to as the gas pedal. When you press down on the accelerator pedal, it opens the throttle, allowing more air and fuel into the engine.Theenginethen generates more power, which translates into increased speed and acceleration. The degree to which you depress the pedal determines the amount of acceleration. Lightly pressing it provides gradual acceleration, while flooring it delivers maximum acceleration.Brake Pedal: While it may seem counterintuitive, the brake pedal also plays a role in controlling acceleration. When you release the accelerator and press the brake pedal, you slow down or decelerate. In some situations, like downhill driving, lightly tapping the brakes can help you control speed and prevent excessive acceleration.GearShifter: The gear shifter allows you to change the gear of your vehicle, influencing acceleration. Lower gears (e.g., first and second) provide more power but lower speed, resulting in strong acceleration. Higher gears (e.g., fourth and fifth) provide less power but higher speed, leading to smoother and more gradual acceleration.These three controls work in harmony to give you precise control over your car's acceleration depending on your driving needs. Mastering their use allows you to navigate various road conditions and traffic situations safely and efficiently.Learn more aboutaccelerator pedalbrainly.com/question/32383179#SPJ11...