Increase trajectory speed in Unity

How can you increase the speed at which an object travels along a trajectory without changing said trajectory in Unity (or any other game engine with physics simulation)?

You only need to adjust two values:

  • The Gravity Scale
  • The Initial Velocity or Force

How?

There are two approaches you can choose:

  • Multiply the start velocity/force by x and the gravity scale by x2
  • Or multiply the velocity/force by sqrt(x) and the gravity scale by x