第一位提出“物体的运动并不需要力来维持”的物理学家是（　　）

    Mr. and Mrs. Wilson and their children were going to begin their holiday one day, and they had to be at the airport at eleven forty in the morning. "It'll take us half an hour to get there in the car," Mr. Wilson said, "so we must leave before eleven o'clock. Don't be late."

    At ten minutes to eleven, they were busy doing things, except Mrs. Wilson didn't, she was sitting quietly on a chair in the garden and enjoying the sun.

    Her husband and children were very surprised. Why wasn't she busy, too. Mrs. Wilson answered, "Well, before I went to bed last night, I moved all our clocks and watches ahead twenty minutes. So now we can go to the airport quietly, Don't worry, then."

如图所示秒表的分针圈中的分度值为____ s，秒表此时的示数为____ 　s．