diff --git a/source/previews/doenet/PA-changing-quadratic-D.doenetml b/source/previews/doenet/PA-changing-quadratic-D.doenetml index bf293b3f..637aa506 100644 --- a/source/previews/doenet/PA-changing-quadratic-D.doenetml +++ b/source/previews/doenet/PA-changing-quadratic-D.doenetml @@ -84,17 +84,17 @@
+
When does the water balloon land on the ground?
-
+
What is the average velocity of the water balloon in the final second before it lands?
-
+
What is the average velocity of the water balloon on the interval
-