GRE official Guide Quant - Practice Test 1, Section 6

I found this in GRE official Guide. It’s taking about stopping distance, but Greg never taught us. How can I solve this types of quant problem?

There’s an associated chart/table if I am right?

Can you please give me the link of this type of question.

It should be above the questions you showed.

I want know how to solve this type of question. Greg does not show us in prepswift or any other places.

It’s a chart question, so one source would be the chart explanations to the Big Book (Old GRE Walkthroughs - GregMat).