Hi everyone,

I am following a tutorial here

https://vilbeyli.github.io/Simple-Trajectory-Motion-Example-Unity3D/

I’d like to modify the `Launch ()`

function by starting the object from top (see image). So half of the parabolic trajectory. So I removed the `Vy`

thinking I would not need it. But the result is not accurate (didn’t reach the target).

Can anyone help?

Thank you so much

```
private void Launch()
{
Vector3 pos = transform.position;
Vector3 target = dot.position;
distance between target and source
float dist = Vector3.Distance(pos, target);
rotate the object to face the target
transform.LookAt(target);
// calculate initival velocity required to land the cube on target using the formula (9)
float Vi = Mathf.Sqrt(dist * -Physics.gravity.y / (Mathf.Sin(Mathf.Deg2Rad * _angle * 2)));
float Vy, Vz; // y,z components of the initial velocity
//Vy = Vi * Mathf.Sin(Mathf.Deg2Rad * _angle);
Vz = Vi * Mathf.Cos(Mathf.Deg2Rad * _angle);
// create the velocity vector in local space
Vector3 localVelocity = new Vector3(0f, 0f, Vz);
// transform it to global vector
Vector3 globalVelocity = transform.TransformVector(localVelocity);
// launch the cube by setting its initial velocity
GetComponent<Rigidbody>().velocity = globalVelocity;
// after launch revert the switch
_targetReady = false;
}`
```