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?
    - 5units of tfeetmeterssecondsminutesfeet per minutemeters per second + 5units of tfeetmeterssecondsminutesfeet per minutemeters per second

    -

    +

    What is the average velocity of the water balloon in the final second before it lands?
    - -25units of AVfeetmeterssecondsminutesfeet per minutemeters per second + -25units of AVfeetmeterssecondsminutesfeet per minutemeters per second

    -

    +

    What is the average velocity of the water balloon on the interval [4.9,5]?
    - -29.5units of AVfeetmeterssecondsminutesfeet per minutemeters per second + -29.5units of AVfeetmeterssecondsminutesfeet per minutemeters per second