The air resistance to a car at 20 kmph is R. The air resistance at 40 kmph will be July 27, 2022 – by admin Question: The air resistance to a car at 20 kmph is R. The air resistance at 40 kmph will be [A]. R [B]. 2 R [C]. 4R [D]. 4 R2 Answer: Option C Explanation: No answer description available for this question.