code: public void applyCentralImpulse(final float x, final float y, final float z) {
          mPhysicsContext.runOnPhysicsThread(new Runnable() {
              @Override
              public void run() {
                  Native3DRigidBody.applyCentralImpulse(getNative(), x, y, z);
              }
          });
      }
docs: Apply a central vector vector [X, Y, Z] to this {@linkplain GVRRigidBody rigid body}
  
  @param x impulse factor on the 'X' axis.
  @param y impulse factor on the 'Y' axis.
  @param z impulse factor on the 'Z' axis.