(a) The acceleration of the ball is .
Since is constant, the path is
,because and we can choose
This path is a straight line, with a direction given by .
It will be useful to find the height:
(b) The magnitude (size) of the acceleration of the ball is The
time for the ball to travel down the hypotenuse of the figure is
(c) The magnitude of the speed of the ball at the bottom will be