Click on the screen to see the vector and its components. If you need vectors in your project you can copy the sprites and the code. let me know if it is useful for you
Better way to demonstrate vectors on scratch (does the components with the pen instead of sprites) Click green flag to start - then when you click the vector and components will change. Also if you hold the mouse button the vector and its components will follow the mouse. You can copy this into your project to add arrows for any vector quantity (e.g. velocity).