For a physichs project I had to build a trebuchet. I measured how for it shot, and how long it took. After some calculations I got:
Vi in the X= 6.258
VI in the y= 6.64
Accel in X= 0
Accel in Y= -9.8
Distance in the X= 4.8
Distance in the Y= 2.25
Time in the X= 1.36
Time In the Y= .68...