SkiCtrlr

using UnityEngine;
using System.Collections;

public class skiSimple1 : MonoBehaviour {
    public GameObject Body;
    Rigidbody BodyRb;

    public bool IsGrounded;
    private Rigidbody rb;
    public float Speed = 100.0f;
    public float RotateSpeed = 100.0f;
    public float FlipSpeed = 100.0f;
    public float BoostSpeed = 200.0f;
    public float JumpPower = 100.0f;

    void Start () {
        rb = GetComponent<Rigidbody>();
        BodyRb = Body.GetComponent<Rigidbody>();
    }
    void OnCollisionStay (Collision collisionInfo)
    {
        IsGrounded = true;
    }

    void OnCollisionExit (Collision collisionInfo)
    {
        IsGrounded = false;
    }

    void FixedUpdate() {
        float moveHorizontal = Input.GetAxis ("Horizontal");
        float moveVertical = Input.GetAxis ("Vertical");
        if (IsGrounded){

            if (Input.GetKey (KeyCode.Space)) {
                rb.AddRelativeForce (transform.up * JumpPower);
            }
            rb.AddForce (transform.forward * moveVertical * Speed);
            rb.AddTorque (transform.up * moveHorizontal * RotateSpeed);
            rb.AddTorque (transform.right * moveVertical * FlipSpeed*0.1f);
            rb.angularDrag= 2.0f;

            BodyRb.AddForce(transform.forward * moveVertical * Speed);
        }
        else {
            rb.angularDrag = 0.0f;
            //rb.AddTorque (transform.right * moveVertical * FlipSpeed);
            rb.AddTorque (transform.up * moveHorizontal * RotateSpeed*0.1F);
            BodyRb.AddTorque(transform.right * moveVertical * Speed);
        }
    }
}