[填空题]
The graphs of displacement, tx t7fo6558htsg9wlk velocity and accelerat+2rx ;lo pdil qy2,it 9.xhof*ion of a roller coaster in a theme park are shown in the following diagrairp2.fy t2l;xd+q li,x ho*o9m.
1. Complete the following table by noting which graph A, B or C corresponds to each function.
When function is displacesment ;the graph is
When function is acceleration ;the graph is .
2. Write down the value of t when the velocity is greatest.
t= .
