public void Activity(float frameTimeInSeconds)
{
timeUntilExtraPointsCanBeAdded -= frameTimeInSeconds;
// linear approximation:
this.Velocity += Acceleration * frameTimeInSeconds;
// This is a linera approximation to drag. It's used to
// keep the object from falling too fast, and eventually
// to slow its horizontal movement. This makes the game easier
this.Velocity -= Velocity * GameCoefficients.FruitDrag * frameTimeInSeconds;
this.Position += Velocity * frameTimeInSeconds;
}