They are addforces to a rigidbody.
Here is the code for it
[Command]
void CmdShoot()
{
BallRigidBody.AddForce((PlayerBody.transform.forward) * ShotPowerCurrent, ForceMode.Impulse);
BallRigidBody.AddForce((PlayerBody.transform.up) * ShotHeight, ForceMode.Impulse);
}