Figure shows the path of an ice skater begining from rest at A to rest at M. The heavy dots along the path indicate the position of the skater every 2 s. On the curved path are shown approximate directions and magnitudes for the tangential and centripetal acceleration of several points by arrows. Column-II gives comparison of first quantity with second quantity in given order. 
Note : For the given problem if tangential acceleration between successive points on curve is zero then it is zero in the entire path between them.