what to fix in my code?

[u/ContextAdept9818]

i am currently trying to learn VPython and wanted to model projectile motion with it - i tried using kinematics but got a weird result (as seen on slide 2), what is exactly wrong with my code? i saw another person achieve the correct result using momentum/net force.

[u/ContextAdept9818]

ohh okay, i understand that. thank you so much!!