A foot ball is kicked by a player with certain angle to the horizontal. Is there any point at which velocity is perpendicular to its acceleration?

A foot ball is kicked by a player with certain angle to the horizontal

1.	A foot ball is kicked by a player with certain angle to the horizontal. Is there any point at which velocity is perpendicular to its acceleration?
Answer» Solution :YES. At its maximum height in the parabolic path vertical velocity is zero but DUE to HORIZONTAL component, velocity acts along HORIZONTALLY, but acceleration of the football acts vertically DOWNWARDS.