3. C
Object decelerates when travelling upwards. When it reaches the max height, vertical velocity becomes 0. After this moment, it will fall and accelerate.
4. A
The ball moves only horizontally so no vertical displacement.
5. C
using the second formula on the top of your worksheet,
height = (0)(2.25) + 1/2• (9.81)(2.25^2)
=24.8m