Player.rigidbody.AddForce() don't work

[system]

Hello.
I write this code on FixedUpdate() Function but it doesn’t work at all.
Player.rigidbody.AddForce( Vector3(100,0,0));

I tried many ways but i confused.
Please Help me.

[system]

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[mikebelotti]

There could be a few reasons for this. First, what is your force mode (impulse, acceleration, etc.)? Try switching that around… Also, it could be that that is not enough force; is your object on a surface that has a lot of friction?

[system]

I switching the force mode but anything doesn’t changed. I test 10 times force Up and down but anything doesn’t change. my Object on the fly without gravity. the Drag item so tested but anything doesn’t change. I think the problem rise up in another place such as collide in components.