Acceleration is defined as a change in velocity. Pushing on the gas pedal increases the flow of gasoline to the engine, increasing the car's velocity and causing acceleration. Pushing on the brake pedal reduces the car's speed, which changes the velocity and also causes acceleration. Turning the steering wheel changes the direction and therefore the velocity, resulting in acceleration as well.
The controls in an automobile that can cause an acceleration of the car are the gas pedal, brakes, and steering wheel. Acceleration is defined as a change in velocity, which involves changes in speed and/or direction. Using the gas pedal increases the car's speed, thereby increasing its velocity, which is a direct form of acceleration. On the other hand, applying the brakes does indeed slow down the car, which is a decrease in speed but is still a form of acceleration since it results in a change in the car's velocity. Likewise, turning the steering wheel changes the direction of the car's velocity, which also constitutes acceleration.
During uniform circular motion, such as when a car turns a corner at a constant speed, the direction of velocity is continually changing, resulting in a centripetal acceleration towards the center of the circle. This experience of acceleration is felt as a 'fictitious force,' commonly referred to as centrifugal force, pushing you away from the center of the turn due to Newtons's first law of motion, which states that an object at rest or in motion will stay at rest or in motion in a straight line unless acted upon by an external force.
The gas pedal and steering wheel are the controls that cause acceleration in a car. The gas pedal increases speed, while the steering wheel changes direction, resulting in a change in velocity. The brake pedal, although it decreases speed, also causes a change in velocity and is therefore also a form of acceleration.
;