Question

Consider the following controls in an automobile: gas pedal, brake, steering wheel. The controls in this list that cause an acceleration of the car are –

• A. All three controls
• B. The gas pedal and the brake
• C. Only the brake
• D. Only the gas pedal

Answer 1

Answer: (A)

All three controls

Answer 2

Because acceleration occurs whenever the velocity changes in any way – with an increase or decrease in speed, a change in direction, or both – all three controls are accelerators. The gas pedal causes the car to speed up; the brake pedal causes the car to slow down. The steering wheel changes the direction of the velocity vector.