The technical formula used to determine braking distance is speed squared divided by _______ times the drag factor.

The formula for calculating braking distance is vital for understanding how a vehicle stops under given conditions. The technical formula states that braking distance is determined by taking the square of the speed of the vehicle and dividing it by a specific constant multiplied by the drag factor.

In this instance, the correct answer is derived from the physics behind stopping distances, particularly the relationship between speed, friction, and the physics of motion. The constant used in this formula, which links speed to the braking distance, reflects the dynamics of how quickly a vehicle can decelerate given its speed and the efficiency of the braking system represented by the drag factor.

When evaluating stopping distance, a standard reference value of 30 is commonly used for vehicles operating on dry, paved roads. This value helps to standardize calculations for safety applications and practical driving assessments. Thus, understanding that the value of 30 represents a reasonable estimate for typical road conditions allows drivers and safety professionals to assess braking distances accurately under normal driving scenarios.

In summary, using 30 in the formula aligns with established calculations for braking distance, providing a reliable framework for determining how quickly a vehicle can stop given certain conditions.