Answer
No.
Work Step by Step
(d)
During the flight, $v_{y}$ gradually decreases from $v_{0y}$ until it becomes zero at the maximum height.
After a momentary zero, it becomes more and more negative until the end of flight.
We found in part c that $v_{y}=4.80m/s>0$ when the ball hits the wall,
so it is still positive, decreasing to zero,
meaning that it has not reached the highest point yet.
