How can i keep this button pressed without acctualy doing it ?

i got the code here : --->

using UnityEngine; using System.Collections;

public class controlPlayer : MonoBehaviour {

 public float viteza ;  // this is the speeed
  
  
 void Update()
 {  
      
      
     if(Input.GetKey(KeyCode.Q) ) //this if for the second camera when i press q the camera goes 90 degres to left and here are the controlls for that angle ...for the ball
         //control camera 2
     {   float miscaOrizontal = Input.GetAxis("Horizontal");
         float miscaVertical = Input.GetAxis("Vertical");
         Vector3 miscare = new Vector3(miscaVertical,0.0f,(-miscaOrizontal));
         rigidbody.AddForce(miscare * viteza * Time.deltaTime);
          
     }     
     if(Input.GetKey(KeyCode.E) ) //here when i try to go to camera 1 and also controls for ball for that angle
         //control camera 1
     {    float miscaOrizontal2 = Input.GetAxis("Horizontal");
         float miscaVertical2 = Input.GetAxis("Vertical");
         Vector3 miscare2 = new Vector3(miscaOrizontal2,0.0f,miscaVertical2);
         rigidbody.AddForce(miscare2 * viteza * Time.deltaTime);
          
     }
      

 }
 
 
 
 
  
 }
 
 
 

}

so the problem is that when i keep pressing E from my keyboard that ball goes using the arrows..but when i dont keep pressing E the ball doesnt roll...also for the other camera for the Q ...if i keep pressing the ball rolls ...if i dont the ball stops...