Your problem is most likely either related to Scale or related to your ForceMode Parameter.

Scale:

If your physics objects seem to move really slowly at all times, then it might just be because your objects are too big. Try shrinking your objects:

A soccer ball should have a diameter of around 0.12 units; For pool try 0.05 diameter; For Golf try 0.04 or less

ForceMode:

If you are using Rigidbody.AddForce to move your game pieces around, be careful what ForceMode you use. Example:

function Start() {
    //ForceMode.Force [default!] will multiply by Time.deltaTime;
    //     Intended use is to apply Force OVER SEVERAL FRAMES
    rigidbody.AddForce(Vector3.forward);

    //ForceMode.Impulse adds all the force in one burst; useful for kicking
    rigidbody.AddForce(Vector3.forward * 10, ForceMode.Impulse);

    //ForceMode.Acceleration will acts exactly like gravity does
    //    This is the same as multiplying by rigidbody.mass
    rigidbody.AddForce(Vector3.up * -9.8, ForceMode.Acceleration);

    //ForceMode.VelocityChange will simply add the input to rigidbody.velocity
    //    This is the same as using Impulse and multiplying by rigidbody.mass
    rigidbody.AddForce(Vector3.forward, ForceMode.VelocityChange);
}