[问答题]
The position of a racing car, whisqz c5,r hct if p).hx;b)5:gg6jfk)gch starts from re)j-j u tv,h6 2: j5iqiwza3uygst at t = 0 and moves in a straight line, is given as a function of time in the following Table. Estj )5j- it,3za2wvu6 iujhg:qyimate (a) its velocity and (b) its acceleration as a function of time. Display each in a Table and on a graph.
