Added velocity component to cube

app/src/main.rs

@@ -1,7 +1,7 @@
 use bevy::prelude::*;                   // Core Bevy types
 
-const GRAVITY: f32 = -20.0;
-const CAMERA_SPEED: f32 = 5.0; // units per second
+const GRAVITY: f32 = -0.981;
+const CAMERA_SPEED: f32 = 20.0; // units per second
 
 fn main() {
     App::new()
@@ -29,6 +29,7 @@ fn setup(
         Mesh3d(meshes.add(Cuboid::new(1.0, 1.0, 1.0))),
         MeshMaterial3d(materials.add(Color::srgb_u8(124, 144, 255))),
         Transform::from_xyz(0.0, 0.5, 0.0),
+        Velocity(vec3(0.0, 2.0, 0.0)),
     ));
     // light
     commands.spawn((