Question

a field hockey ball is launched from the ground at an angle to the horizontal. what are the ball's horizontal and vertical accelerations at its maximum height?

Answer 1

In the absence of air resistance ...

-- The ball has no horizontal acceleration at any point in its flight.

-- The ball's vertical acceleration is 9.8 meters per second-squared downward
at every point its flight, from the moment it leaves the toe of the kicker until it hits
the ground.