A ballistic cart is a cart that can shoot a ball vertically and (maybe) catch it again.

With the cart rolling at constant speed when it shoots the ball, where will the ball land?

1. In the cart (29/33) (88%)
2. Behind the cart (3/33) (9%)
3. Ahead of the cart (1/33) (3%)

Both the ball and the cart have the same x-position at all times, so the ball must land back in the cart. The ball's x-velocity is not affected by its motion in the y direction.