Question

(TOLD) When no RCR is available, the following representative values will be used:

Dry ____
Wet ____
Icy/Snow Covered ____

Answer 1

Stopping distance calculations depend on the coefficient of friction between the tires and the road surface. Dry concrete has the highest, wet concrete is lower, and icy/snow covered surfaces have the lowest coefficient of friction.

Step-by-step explanation:

The question asks us to calculate the stopping distance of a car under three different road conditions without any rolling resistance and where the tires do not slip. Assuming you are required to calculate stopping distances based on the coefficient of friction (RCR representative values), these would typically be:

Dry concrete: This surface would have the highest coefficient of friction, typically between 0.6 to 0.85.

Wet concrete: The coefficient of friction on a wet surface is lower, usually ranging from 0.5 to 0.7.

Icy/Snow covered: The coefficient of friction would be quite low on this surface, around 0.1 as given in the question for another scenario involving shoes on ice.

Note that these values are general estimates and the actual coefficient of friction can vary with conditions such as temperature, quality of concrete, and whether there are any additives mixed with the ice.