The initial velocity of the ball is .
The acceleration of a vector is .
Find where does the ball land with what speed.
\The accelaration vector is .
To find the velocity vector integrate the accelaration vector with respect to and adding the initial values.
Substitute the corresponding values.
\.
To find the position vector is by integrating the velocity vector with respect to .
.
When the ball hits the ground at the position .
.
and
and
.
Substitute in
.
.
The ball land at .
Substitute in
.
.
.
The speed of the ball is .
The ball land at with the velocity
.